The world is not composed of heroes and villains, but of men and women with all the passions that God has given them. The ignorant condemn, but the wise pity.

The highest wisdom has but one science - the science of the whole - the science explaining the whole creation and man's place in it.

Education is the path from cocky ignorance to miserable uncertainty.

Wisdom cries out in the streets, and no man regards it.

The true Wisdom is in recognizing our own ignorance.

Know well what leads you forward and what holds you back, and choose the path that leads to wisdom.