Science has not yet taught us if madness is or is not the sublimity of the intelligence.

Adapt what is useful, reject what is useless, and add what is specifically your own.

It is always advisable to perceive clearly our ignorance.

There are no limitations to the mind except those we acknowledge.

The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends, and where the other begins?

If you place your head in a lion's mouth, then you cannot complain one day if he happens to bite it off.

Madame, all stories, if continued far enough, end in death, and he is no true-story teller who would keep that from you.

Simplicity is the ultimate sophistication.

The greatest of wealth is the richness of the soul.

There is a wisdom of the head, and... there is a wisdom of the heart.

The best way to see Faith is to shut the eye of Reason.

The future is uncertain but the end is always near.

The first method for estimating the intelligence of a ruler is to look at the men he has around him.

If a man could have half of his wishes, he would double his troubles.

None but ourselves can free our minds.

Learning and wisdom are superfluities, the surface glitter merely, but it is the heart that is the seat of all power.

It is hard to fight desire; but to control it is the sign of a reasonable man.

The experience gathered from books, though often valuable,is but the nature of learning whereas the experience gained from actual life is of the nature of wisdom.

Colorless green ideas sleep furiously

There are things known and there are things unknown, and in between are the doors of perception.

The road of excess leads to the palace of wisdom.