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?

I have been impressed with the urgency of doing.

The cat is nature's masterpiece.

That which can be lost cannot be deemed riches.

It's not enough that you believe what you see. You must also understand what you see.

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.

I abhor the supreme folly of those who blame the disciples of nature in defiance of those masters who were themselves her pupils