Creation,' in the ordinary sense of the word, is perfectly conceivable. I find no difficulty in conceiving that, at some former period, this universe was not in existence, and that it made its appearance in six days (or instantaneously, if that is preferred), in consequence of the volition of some preexisting Being.

Books are the money of Literature, but only the counters of Science.

The supernatural is being swept out of the universe in the flood of new knowledge of what is natural. It will soon be as impossible for an intelligent, educated man or woman to believe in a god as it is now to believe that earth is flat, that flies can be spontaneously generated, that disease is a divine punishment, or that death is always due to witchcraft.

It is the first duty of a hypothesis to be intelligible.

In matters of intellect, follow your reason as far as it will take you, without regard for any other consideration.

The rung of a ladder was never meant to rest upon.

It is far better for a man to go wrong in freedom than to go right in chains.