What we need are not prohibitory marriage laws, but a reformed society, an educated public opinion which will teach individual duty in these matters

Every species has come into existence coincident both in space and time with a pre-existing closely allied species.

Mars, therefore, is not only uninhabited by intelligent beings such as Mr. Lowell postulates, but is absolutely uninhabitable.

Truth is born into this world only with pangs and tribulations, and every fresh truth is received unwillingly. To expect the world to receive a new truth, or even an old truth, without challenging it, is to look for one of those miracles which do not occur.

In my solitude I have pondered much on the incomprehensible subjects of space, eternity, life and death.

To the mass of mankind religion of some kind is a necessity

Modification of form is admitted to be a matter of time