We are what our thoughts have made us; so take care about what you think. Words are secondary. Thoughts live; they travel far.

The small wisdom is like water in a glass: clear, transparent, pure. The great wisdom is like the water in the sea: dark, mysterious, impenetrable.

We can know only that we know nothing. And that is the highest degree of human wisdom.

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

Train your eyes and ears; train your nose and tongue. The senses are good friends when they are trained. Train your body in deeds, train your tongue in words, train your mind in thoughts. This training will take you beyond sorrow.

Wisdom usually grows up on us like calluses when we are old, gnarled and bent.