A nation orients itself by its own geniuses, and derives from them its ideas of its own ideals, but the guiding star serves also as a light to other nations. As speech has been created by a few great men, the most extraordinary wisdom lies concealed in it, a wisdom which reveals itself to a few ardent explorers but which is usually overlooked by the stupid professional philologists.

There are transitional forms between the metals and non-metals; between chemical combinations and simple mixtures, between animals and plants, between phanerogams and cryptogams, and between mammals and birds [...]. The improbability may henceforth be taken for granted of finding in Nature a sharp cleavage between all that is masculine on the one side and all that is feminine on the other; or that any living being is so simple in this respect that it can be put wholly on one side, or wholly on the other, of the line.

Talent is hereditary; it may be the common possession of a whole family (eg, the Bach family); genius is not transmitted; it is never diffused, but is strictly individual.

Among the notable things about fire is that it also requires oxygen to burn - exactly like its enemy, life. Thereby are life and flames so often compared.

Universality is the distinguishing mark of genius. There is no such thing as a special genius, a genius for mathematics, or for music, or even for chess, but only a universal genius. The genius is a man who knows everything without having learned it.

The genius which runs to madness is no longer genius.

Everything evil is revenge.