Mistakes are always forgivable, if one has the courage to admit them.

Doubt is the origin of wisdom

Your visions will become clear only when you can look into your own heart. Who looks outside, dreams; who looks inside, awakes.

If we do not lay out ourselves in the service of mankind whom should we serve?

No man has any natural authority over his fellow men.

Convictions are more dangerous enemies of truth than lies.

Forget not that the earth delights to feel your bare feet and the winds long to play with your hair.

The very essence of instinct is that it's followed independently of reason.

If you don't know where you're from, you'll have a hard time saying where you're going.

Whatever the mind of man creates, should be controlled by man's character

Desire is the very essence of man.

It is man that makes truth great, not truth that makes man great.

Each problem that I solved became a rule which served afterwards to solve other problems.

Learned we may be with another man's learning: we can only be wise with wisdom of our own.

A proverb is much matter distilled into few words.

Almost every wise saying has an opposite one, no less wise, to balance it.

How often it is that the angry man rages denial of what his inner self is telling him.

Each day is a little life; every waking and rising a little birth; every fresh morning a little youth; every going to rest and sleep a little death.

The place where you made your stand never mattered. Only that you were there...and still on your feet.

Throw your heart over the fence and the rest will follow.

Real knowledge is to know the extent of one's ignorance.