Every possession and every happiness is but lent by chance for an uncertain time, and may therefore be demanded back the next hour.

In our monogamous part of the world, to marry means to halve one's rights and double one's duties.

Any book, which is at all important, should be reread immediately

Anyone can squash a bug but all professors of this world couldn't build one.

Shame on such a morality that is worthy of pariahs, and that fails to recognize the eternal essence that exists in every living thing, and shines forth with inscrutable significance from all eyes that see the sun!

There is only one healing force, and that is nature; in pills and ointments there is none. At most they can give the healing force of nature a hint about where there is something for it to do.

Religions are like fireflies. They require darkness in order to shine.