None but those who have experienced them can conceive of the enticements of science.

The moon gazed on my midnight labours, while, with unrelaxed and breathless eagerness, I pursued nature to her hiding places.

Seek happiness in tranquility and avoid ambition even if it be only the apparently innocent one of distinguishing yourself in science and discoveries.

I leave a sad and bitter world; and if you remember me, and think of me as of one unjustly condemned, I am resigned to the fate awaiting me.

I ought to be thy Adam, but I am rather the fallen angel.

Women are told from their infancy, and taught by the example of their mothers, that a little knowledge of human weakness, justly termed cunning, softness of temper, outward obedience and a scrupulous attention to a puerile kind of propriety, will obtain for them the protection of man.

What can stop the determined heart and resolved will of man?