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

The true method of knowledge is experiment.

Today knowledge has power. It controls access to opportunity and advancement.

Knowledge which is divorced from justice may be called cunning rather than wisdom.

I prefer tongue-tied knowledge to ignorant loquacity.

Suppose that we are wise enough to learn and know - and yet not wise enough to control our learning and knowledge so that we use it to destroy ourselves? Even if that is so knowledge remains better than ignorance.

If knowledge can create problems it is not through ignorance that we can solve them.

Where there is shouting there is no true knowledge.

Where is all the knowledge we lost with information?

All our knowledge has its origins in our perceptions.