The only real mistake is the one from which we learn nothing.

If you are neutral in situations of injustice, you have chosen the side of the oppressor.

Promises are like crying babies in a theater, they should be carried out at once.

There are no eternal facts, as there are no absolute truths.

If you would take, you must first give, this is the beginning of intelligence.

In the practice of tolerance, one's enemy is the best teacher.

Only idiots refuse to change their minds.

The one you buy will be the only one that doesn't work.

Be frank and explicit. That is the right line to take when you wish to conceal your own mind and to confuse the minds of others.

Tact is the knack of making a point without making an enemy.

Obsession is the wellspring of genius and madness.

Wrong life cannot be lived rightly.

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

Things which matter most must never be at the mercy of things which matter least.

Medicine heals diseases of the body, wisdom frees the soul from passions.

Strength does not come from physical capacity. It comes from an indomitable will.

Honesty is the first chapter in the book of wisdom.

If you're happy, don't worry you'll get over it.

Blessed are they who hunger and thirst for righteousness for they shall be satisfied.

I write with experiences in mind, but I don't write about them, I write out of them.

Attachment is the great fabricator of illusions; reality can be attained only by someone who is detached.