For, verily, great love springs from great knowledge of the beloved object, and if you little know it, you will be able to love it only little or not at all.

Nature is the source of all true knowledge. She has her own logic, her own laws, she has no effect without cause nor invention without necessity.

Art is the queen of all sciences communicating knowledge to all the generations of the world.

It is true that impatience, the mother of stupidity, praises brevity, as if such persons had not life long enough to serve them to acquire a complete knowledge of one single subject, such as the human body; and then they want to comprehend the mind of God in which the universe is included, weighing it minutely and mincing it into infinite parts, as if they had to dissect it!

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

Knowledge of the past and of the places of the earth is the ornament and food of the mind of man.