Nature made us - nature did it all - not the gods of the religions.

There is no result in nature without a cause; understand the cause and you will have no need of the experiment.

Of the four elements water is the second in weight and the second in respect of mobility. It is never at rest until it unites with the sea.

A single and distinct luminous body causes stronger relief in the objects than a diffused light; as may be seen by comparing one side of a landscape illuminated by the sun, and one overshadowed by clouds, and illuminated only by the diffused light of the atmosphere.

To any white body receiving the light from the sun, or the air, the shadows will be of a bluish cast.

Necessity is the theme and the inventress, the eternal curb and law of nature.