Blessed be the Lord for the beauty of summer and spring, for the air, the water, the verdure, and the song of birds.

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.

Blessed be the Lord for the beauty of summer and spring, for the air, the water, the verdure, and the song of birds.

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.

Botany is based on fixed genera.

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

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