Our knowledge can only be finite, while our ignorance must necessarily be infinite.

Find something you're passionate about and keep tremendously interested in it.

Humility and knowledge in poor clothes excel pride and ignorance in costly attire.

Knowledge rests not upon truth alone, but upon error also.

The true sign of intelligence is not knowledge but imagination.

Knowledge is the eye of desire and can become the pilot of the soul.

All change is not growth, as all movement is not forward.

Cherish all your happy moments; they make a fine cushion for old age.

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

We are going to have peace even if we have to fight for it.