The eye - which sees all objects reversed - retains the images for some time.

All objects transmit their image to the eye in pyramids and the nearer to the eye these pyramids are intersected the smaller will the image appear of the objects which cause them.

Patience serves as a protection against wrongs as clothes do against cold. For if you put on more clothes as the cold increases, it will have no power to hurt you. So in like manner you must grow in patience when you meet with great wrongs, and they will then be powerless to vex your mind.

As every divided kingdom falls, so every mind divided between many studies confounds and saps itself.

A day will come in which men will look upon an animal's murder the same way they look today upon a man's murder.

A well-spent day brings happy sleep.

Those who become enamoured of the art, without having previously applied to the diligent study of the scientific part of it, may be compared to mariners who put to the sea in a ship without rudder or compass and therefore cannot be certain of arriving at the wished for port.