Nature does not proceed by leaps.

The names of the plants ought to be stable [certa], consequently they should be given to stable genera.

A herbarium is better than any illustration; every botanist should make one.

This drink has a magical power. It strengthens the weak, and revives those who have fainted. Those tired after work and physical activity can return their life forces by this drink much sooner than by nourishment. ... It works as a diuretic, an appetizer, an antitoxin.

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.

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