I hold with Henry George, that at the back of every great social evil will be found a great political wrong

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

There is, I conceive, no contradiction in believing that mind is at once the cause of matter and of the development of individualised human minds through the agency of matter

Civilisation has ever accompanied emigration and conquest - the conflict of opinion, of religion, or of race

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.

I am thankful I can see much to admire in all religions.