Where there is shouting, there is no true knowledge.

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

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.

The aim of education is the knowledge not of facts but of values.

I prefer tongue-tied knowledge to ignorant loquacity.