“In time you may discover everything that can be discovered, and still your progress will only be progress away from humanity.”

You cannot teach a man anything, you can only help him find it within himself.

All truths are easy to understand once they are discovered; the point is to discover them.

Two truths cannot contradict one another.

I am certainly interested in a tribunal in which, for having used my reason, I was deemed little less than a heretic.

That sculpture is more admirable than painting for the reason that it contains relief and painting does not is completely false.

See now the power of truth; the same experiment which at first glance seemed to show one thing, when more carefully examined, assures us of the contrary.

The Divine intellect indeed knows infinitely more propositions.

To be humane, we must ever be ready to pronounce that wise, ingenious and modest statement ‘I do not know’.

Philosophy is written in this grand book, the universe, which stands continually open to our gaze.

To be humane, we must ever be ready to pronounce that wise, ingenious and modest statement ‘I do not know’.

Philosophy is written in this grand book, the universe, which stands continually open to our gaze.

We see only the simple motion of descent, since that other circular one common to the Earth, the tower, and ourselves remains imperceptible.

What greater stupidity can be imagined than that of calling jewels, silver, and gold “precious,” and earth and soil “base”?

I do not know what to say in a case so surprising, so unlooked for and so novel.

I entertain no doubts as to the truth of the transfinites, which I have recognized with God’s help.

The Bible shows the way to go to heaven, not the way the heavens go.

I discover myself on the verge of a usual mistake.

From error to error one discovers the entire truth.

You won’t discover the limits of the soul, however far you go.

We can discover this meaning in life in three different ways: 1. by doing a deed; 2. by experiencing a value; and 3. by suffering.

What one man can invent, another can discover.

I believe myself to possess a most singular combination of qualities exactly fitted to make me pre-eminently a discoverer of the hidden realities of nature.

Imagination is the Discovering Faculty, pre-eminently. It is that which penetrates into the unseen worlds around us, the worlds of Science.

Only when we are brave enough to explore the darkness will we discover the infinite power of our light.