The plant kingdom covers the entire earth, offering our senses great pleasure and the delights of summer.

There are as many species as the infinite being created diverse forms in the beginning, which, following the laws of generation, produced many others, but always similar to them: therefore there are as many species as we have different structures before us today.

Botany is based on fixed genera.

Nature's economy shall be the base for our own, for it is immutable, but ours is secondary. An economist without knowledge of nature is therefore like a physicist without knowledge of mathematics.

If you do not know the names of things, the knowledge of them is lost, too.

The plant kingdom covers the entire earth, offering our senses great pleasure and the delights of summer.

If a tree dies, plant another in its place.