Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.

It is the province of knowledge to speak, and it is the privilege of wisdom to listen.

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

Knowledge of what is does not open the door directly to what should be.

All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.

Knowledge which is acquired under compulsion obtains no hold on the mind.

Discussion is an exchange of knowledge an argument an exchange of ignorance.

Pain and foolishness lead to great bliss and complete knowledge, for Eternal Wisdom created nothing under the sun in vain.

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

Knowledge of what is possible is the beginning of happiness.