— The Edge of What We Know —

The more I read, the more I acquire, the more certain I am that I know nothing.

Voltaire

About the Author

François-Marie Arouet (1694–1778) — who wrote under the pen name Voltaire — was one of the most dangerous minds in Europe, which is why so many kings tried to silence him. Born in Paris to a middle-class family, he was brilliant from childhood and insufferable about it, which got him expelled from school circles, imprisoned in the Bastille, and eventually exiled to England. That exile changed him. He returned to France carrying English ideas about religious tolerance, freedom of thought, and the limits of authority — ideas that would help ignite the French Revolution, though he did not live to see it.
He wrote plays, poems, history, novels, and tens of thousands of letters. He satirized kings, bishops, and philosophers with equal enthusiasm. His most famous work, Candide, skewered the fashionable optimism of his day with such ferocious wit that it was immediately banned in Geneva, Paris, and Rome, which ensured that everyone read it.
He was not a religious man in any orthodox sense. He was something harder to categorize: a man who believed deeply in reason and was honest enough to acknowledge reason’s edges. He lived to the age of eighty-three, working almost until his last breath — reading, writing, arguing, revising.
The man who said he was certain of nothing spent his life certain about this: that the examined mind, the questioning spirit, the refusal to stop learning — these were the highest human obligations. He earned the right to that opinion by spending eighty-three years in pursuit of it.

Historical Context

Voltaire wrote this during the final decades of his life, when he was producing the Philosophical Dictionary — a sprawling, opinionated compendium of ideas on everything from government to scripture to the nature of God. He was, by that point, one of the most famous men in Europe. Kings sought his counsel. Catherine the Great of Russia corresponded with him. He had outlived most of his rivals and accumulated more knowledge than almost anyone alive.
And yet the older he grew, the more clearly he saw the gap between what he had learned and what there was to know. He is not being falsely modest here. He is not performing humility for an audience. He is reporting what he observed in himself: that the act of genuine learning does not produce certainty. It produces a clearer view of how much remains beyond your sight.
This is the mark of an educated mind — not the feeling that you have arrived, but the growing awareness of how far the road extends. They are those who think they know everything. Those who have learned enough to stop asking questions. Those with true wisdom, never stop learning.

A Story to Sit With

In 1727, Isaac Newton was dying. He had discovered calculus, described the laws of motion, and worked out the mathematics of gravity. He had revolutionized astronomy, optics, and physics. He was, by almost any measure, the greatest scientific mind the world had yet produced.
Near the end of his life, he was asked to reflect on his accomplishments. He spoke of being like a boy playing on the seashore, finding the occasional smoother pebble or prettier shell, whilst the great ocean of truth lay all undiscovered before him.
The ocean of truth. All undiscovered before him. This, from the man who had described how planets move.
Voltaire had read Newton carefully and admired him tremendously. When Voltaire said he was certain he knew nothing, he was standing in the same posture as Newton on that shore — not diminished by the vastness before him, but enlarged by his honest view of it. This is what genuine learning does. It does not make the ocean smaller. It makes the learner humble enough to keep wading in.

Scripture Cross-Links

Proverbs 1:7 — “The fear of the Lord is the beginning of knowledge: but fools despise wisdom and instruction.”
2 Nephi 9:28–29 — “When they are learned they think they are wise, and they hearken not unto the counsel of God… But to be learned is good if they hearken unto the counsels of God.”
Doctrine and Covenants 88:118 — “Seek ye diligently and teach one another words of wisdom; yea, seek ye out of the best books words of wisdom; seek learning, even by study and also by faith.”
Proverbs 3:5–7 — “Trust in the Lord with all thine heart; and lean not unto thine own understanding… Be not wise in thine own eyes: fear the Lord, and depart from evil.”
Doctrine and Covenants 58:3 — “Ye cannot behold with your natural eyes, for the present time, the design of your God concerning those things which shall come hereafter.”

Thematic Reflection

There is a kind of knowledge that closes the mind, and there is a kind that opens it — and the difference has nothing to do with how much you have read or how many degrees hang on your wall. It has to do with what you do with what you know.
The closed-minded person uses knowledge as a wall. Every new fact is another brick in a fortress of certainty, and the fortress is the point. No light gets in from outside. No question is welcome that might require the fortress to be rebuilt.
The open-minded person uses knowledge as a window. The more clearly they can see, the more clearly they see how far the view extends — and how much remains beyond it. For them, learning is not a destination. It is a posture, a discipline, a lifelong orientation toward what is still unknown.
Voltaire is describing what the scriptures would recognize as intellectual humility — the honest acknowledgment that you are a finite creature standing before an infinite field of truth. This is not the humility of inadequacy. It is the humility of the genuinely educated, who have read widely enough to know how much they have not read, and have lived long enough to know how much they have not yet understood.
Our Father in Heaven invites us to seek learning — by study and by faith — and the invitation is ongoing. It does not have a graduation date. The moment you decide you have learned enough, you have stopped learning. And stopping is a kind of death.

Richard’s Personal Reflection

I spent thirty years in medicine learning to say the three most dangerous words in a physician’s vocabulary: I don’t know. They are dangerous not because they are wrong — they are nearly always honest — but because saying them out loud requires something that medicine does not always train us toward. It requires humility about what we cannot see, what we have not considered, what the textbook did not cover, and what the patient’s body has not yet agreed to reveal.
In my early years I was faster to diagnose. I had more certainty and less wisdom, which is a combination that has harmed more patients than I would like to count — not mine specifically, but as a category. The most perilous physician is not the one who knows a little. It is the one who knows a lot and has confused that with knowing enough.
What I have learned, across three decades and tens of thousands of appointments, is that the best clinical thinking begins with a question and ends with another one. You find the answer, and the answer opens a door, and behind the door there is a room full of things you did not know to ask. The good physician steps into that room without resentment. The great one is grateful for it.
Voltaire was not a doctor. But he understood the practice of medicine better than many who were.

Lessons from Patients

I had a patient in my early years — a retired schoolteacher in her late sixties, sharp as a tack — who came to me with fatigue that had been building for months. I had a diagnosis in mind almost before she finished describing her symptoms. I ordered the tests I expected to confirm it. They came back inconclusive. I ordered more tests, still looking for what I had already decided was there.
It was her daughter — sitting in the corner of the exam room, quiet until then — who said, softly, “Could it be something else?”
It was. Something I had not considered because my initial certainty had narrowed my sight. Once I opened the question back up — once I let go of what I thought I knew — the real answer came quickly, and it was treatable.
I have thought about that daughter’s question many times since. It may be the most useful diagnostic tool I have ever encountered: Could it be something else? It is the question of the genuinely humble. It is also, almost always, worth asking.

Grandfather’s Counsel

My dear ones, there will be people in your life who wear their knowledge like armor — who use what they know to shut down conversation, to dismiss other views, to signal that they have already arrived and are waiting for the rest of you to catch up. Do not be those people. And do not be impressed by them. Certainty that stops asking questions is not wisdom. It is arrogance wearing wisdom’s coat.
The truly educated person is always the one still learning. Still reading. Still willing to say, in any conversation with God or man: I might be wrong. Tell me more.
Voltaire — who was nobody’s idea of a saint — discovered this the hard way, through decades of argument and exile and revision. The scriptures teach it more gently: trust in the Lord, lean not on your own understanding. Seek learning by study and by faith. Let that seeking be lifelong.
The most important thing you can know is how much you do not know. Let that knowledge make you curious, not anxious. Let it keep you at the feet of teachers — in classrooms, in scriptures, in quiet morning prayer — for as long as you live.
The ocean of truth is very large. You have your whole life to wade in. Don’t stop at the shore.

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Humility · Lifelong Learning · Wisdom · Character · Faith and Reason · Classic Literature
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intellectual humility
lifelong learning
Voltaire
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growth mindset
seeking truth

EXCERPT:
Voltaire — one of the most widely read men in Europe — spent eighty-three years in relentless pursuit of knowledge, and what he found at the end of it was this: the more he learned, the more clearly he saw how much remained beyond his reach. This entry explores a truth that the wisest minds across every century have discovered: genuine learning does not produce certainty — it produces a deeper, more honest view of how much we do not know. From Newton on the seashore to a quiet observation in an exam room, this reflection invites us to wear our knowledge not as armor, but as a window — and to keep the questions alive.