All knowledge which ends in words will die as quickly as it came to life, with the exception of the written word: which is its mechanical part.

Thirst will parch your tongue and your body will waste through lack of sleep ere you can describe in words that which painting instantly sets before the eye

As a day well spent brings blessed sleep, so a life well spent brings a blessed death.

Where there is shouting, there is no true knowledge.

In order to arrive at knowledge of the motions of birds in the air, it is first necessary to acquire knowledge of the winds, which we will prove by the motions of water in itself, and this knowledge will be a step enabling us to arrive at the knowledge of beings that fly between the air and the wind.

Wisdom is the daughter of experience