Philosophy means thinking things out for oneself. Ultimately, there can be only one true philosophy, since reason is one and we all live in the same world.

The Devil deserves zero tolerance.

The great discovery of the nineteenth century, that we are of one blood with the lower animals, has created new ethical obligations which have not yet penetrated the public conscience. The clerical profession has been lamentably remiss in preaching this obvious duty.

If the universe is running down like a clock, the clock must have been wound up at a date which we could name if we knew it. The world, if it is to have an end in time, must have had a beginning in time.

Beneath the dingy uniformity of international fashions in dress, man remains what he has always been; a splendid fighting animal, a self-sacrificing hero, and a blood thirsty savage.

Let none of us delude himself by supposing that honesty is always the best policy. It is not.

The enemies of freedom do not argue; they shout and they shoot.