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

Earth, turning upon itself, moves round the Sun.

I do not feel obliged to believe that the same God who has endowed us with senses, reason, and intellect has intended us to forego their use.

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.

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

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.

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

The conquest of the earth, which mostly means the taking it away from those who have a different complexion or slightly flatter noses than ourselves, is not a pretty thing when you look into it too much.

There are gems of wondrous brightness Often times lying at our feet, And we pass them, walking thoughtless, Down the busy, crowded street. If we knew, our pace would slacken, We would step more oft with care, Lest our careless feet be treading To the earth some jewel rare.

Night conceals a world but reveals a universe.

Mankind are earthen jugs with spirits in them.

Why stay on the earth except to grow.

The wind sounded of Mother Earth’s forsaken and abandoned cries.

Earth is crammed with heavens.

You’re on earth. There’s no cure for that.