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

When all the thoughts are concerning one thing and the person loses interest in other things, the melancholy begins.

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.

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

There is no generation from an egg in the Mineral Kingdom. Hence no vascular circulation of the humours as in the remaining Natural Kingdoms.

A professor can never better distinguish himself in his work than by encouraging a clever pupil, for the true discovers are among them, as comets amongst the stars.