For the butterfly, mating and propagation involve the sacrifice of life, for the human being, the sacrifice of beauty.

Mastery passes often for egotism.

Let us live, while we are alive!

Man errs as long as he strives.

We blame equally him who is too proud to put a proper value on his own merit and him who prizes too highly his spurious worth.

Nothing is more consonant with Nature than that she puts into operation in the smallest detail that which she intends as a whole.

Where there are no women there are no good manners