Stones grow, plants grow, and live, animals grow live and feel.

If a tree dies, plant another in its place.

I demand of you, and of the whole world, that you show me a generic character... by which to distinguish between Man and Ape. I myself most assuredly know of none.

A practical botanist will distinguish at the first glance the plant of the different quarters of the globe and yet will be at a loss to tell by what marks he detects them.

Nomenclature, the other foundation of botany, should provide the names as soon as the classification is made... If the names are unknown knowledge of the things also perishes... For a single genus, a single name.

Stones grow, plants grow, and live, animals grow live and feel.

We admit as many genera as there are different groups of natural species of which the fructification has the same structure.