Over-population is a phenomenon connected with the survival of the unfit, and it is a mechanism which has created conditions favourable to the survival of the unfit and the elimination of the fit.

Man, as we know him, is a poor creature; he is halfway between an ape and a god and he is travelling in the right direction.

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.

No healthy civilization can ever be reared on a foundation of devitalized work.

Experience proves that none is so cruel as the disillusioned sentimentalist.

Theater is, of course, a reflection of life. Maybe we have to improve life before we can hope to improve theater.

We tolerate shapes in human beings that would horrify us if we saw them in a horse.