Also by getting the scholar to use his eyes and other senses to observe typical instances of the things that he is to know: also by manufacturing instances which is called experiment. This passage would make a good text for a work on paedagogy. The educator, like the physician, should wait upon nature, and call forth the native powers of subject mind and subject body; not expect to do all things by manipulation, like one kneading clay into an image.

Of God and His Creatures: 2.75