To lie is vile, to tell truth is excellent, if not noble.

The color of the object illuminated partakes of the color of that which illuminates it.

Why are the bones of great fishes, and oysters and corals and various other shells and sea-snails, found on the high tops of mountains that border the sea, in the same way in which they are found in the depths of the sea?

Sculptured figures which appear in motion, will, in their standing position, actually look as if they were falling forward.

The cat is nature's masterpiece.

To such an extent does nature delight and abound in variety that among her trees there is not one plant to be found which is exactly like another; and not only among the plants, but among the boughs, the leaves and the fruits, you will not find one which is exactly similar to another.

The noblest pleasure is the joy of understanding.