He who truly knows has no occasion to shout.

The eye transmits its own image through the air to all the objects which face it, and also receives them on its own surface, whence the "sensus communis" takes them and considers them.

To make a perfume, take some rose water and wash your hands in it, then take a lavender flower and rub it with your palms, and you will achieve the desired effect

Common Sense is that which judges the things given to it by other senses.

You don't get into trouble because of the things you don't know. It is the things you don't know you don't know that really get you into a mess.

Test knowledge through experience, be prepared to make mistakes, and be persistent about it.

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