One must wait until the evening to see how splendid the day has been.

Science may set limits to knowledge, but should not set limits to imagination.

Intellectuals solve problems, geniuses prevent them.

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

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

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

Every intelligent individual wants to know what makes him tick, and yet is at once fascinated and frustrated by the fact that oneself is the most difficult of all things to know.

It is neither good nor bad, but thinking makes it so.

Those who see the invisible can do the impossible.

No man has any natural authority over his fellow men.

What's real and what's true aren't necessarily the same.

Boredom is the root of all evil - the despairing refusal to be oneself.

The wise man should restrain his senses like the crane and accomplish his purpose with due knowledge of his place, time and ability.

Creativity is the process of having original ideas that have value.

I have no desire to make windows into mens souls

If you don't want to slip up tomorrow, speak the truth today.

Wisdom begins at the end.

He who is cruel to animals becomes hard also in his dealings with men. We can judge the heart of a man by his treatment of animals.

Reflect upon your present blessings, of which every man has many; not on your past misfortunes, of which all men have some.

Don't take tomorrow to bed with you.

In order to change the world, you have to get your head together first