For the purpose of knowledge we must know how to make use of the inward current which draws us towards a thing, and also of the current which after a time draws us away from it.

Books are infinite in number and time is short. The secret of knowledge is to take what is essential. Take that and try to live up to it.

There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there.

Every extension of knowledge arises from making the conscious the unconscious.

It is not when truth is dirty, but when it is shallow, that the lover of knowledge is reluctant to step into its waters.

Our treasure lies in the beehive of our knowledge. We are perpetually on the way thither, being by nature winged insects and honey gatherers of the mind.