Nature does not proceed by leaps.

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

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.

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

All the species recognized by Botanists came forth from the Almighty Creator's hand, and the number of these is now and always will be exactly the same, while every day new and different florists' species arise from the true species so-called by Botanists, and when they have arisen they finally revert to the original forms. Accordingly to the former have been assigned by Nature fixed limits, beyond which they cannot go: while the latter display without end the infinite sport of Nature.

It is not God, but people themselves who shorten their lives by not keeping physically fit.

It is the genus that gives the characters, and not the characters that make the genus.