Dragging out life to the last possible second is not living to the best effect. The nearer the bone, the sweeter the meat. The best of life, Passworthy, lies nearest to the edge of death.

The art of ignoring is one of the accomplishments of every well-bred girl, so carefully instilled that at last she can even ignore her own thoughts and her own knowledge.

If we don't end war, war will end us.

Biologically the species is the accumulation of the experiments of all its successful individuals since the beginning.

The ethical system of these men of the New Republic, the ethical system which will dominate the world state, will be shaped primarily to favour the procreation of what is fine and efficient and beautiful in humanity — beautiful and strong bodies, clear and powerful minds, and a growing body of knowledge — and to check the procreation of base and servile types, of fear-driven and cowardly souls, of all that is mean and ugly and bestial in the souls, bodies, or habits of men.

It's against reason," said Filby. "What reason?" said the Time Traveller.

We can't have any weak or silly. Life is real again, and the useless and cumbersome and mischievous have to die. They ought to die. They ought to be willing to die. It's a sort of disloyalty, after all, to live and taint the race.