All our knowledge has its origins in our perceptions.

Where there is shouting, there is no true knowledge.

Wisdom is the daughter of experience

The acquisition of knowledge is always of use to the intellect, because it may thus drive out useless things and retain the good. For nothing can be loved or hated unless it is first known.

The knowledge of all things is possible

All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.