Although your knowledge is weak and small you need not be silent: since you cannot be judges be at least witnesses.

The apple cannot be stuck back on the Tree of Knowledge once we begin to see we are doomed and challenged to seek the strength to see more not less.

There is so I believe in the essence of everything something that we cannot call learning. There is my friend only a knowledge - that is everywhere.

We can be knowledgable with other men's knowledge but we cannot be wise with other men's wisdom.

Knowledge is not eating and we cannot expect to devour and possess what we mean. Knowledge is recognition of something absent it is a salutation not an embrace.

Knowledge can be communicated but not wisdom. One can find it live it be fortified by it do wonders through it but one cannot communicate and teach it.

Between falsehood and useless truth there is little difference. As gold which he cannot spend will make no man rich so knowledge which cannot apply will make no man wise.

Music is the one incorporeal entrance into the higher world of knowledge which comprehends mankind but which mankind cannot comprehend.

Without self knowledge without understanding the working and functions of his machine man cannot be free he cannot govern himself and he will always remain a slave.

Even the knowledge of my own fallibility cannot keep me from making mistakes. Only when I fall do I get up again.