Men fancied there might be other men upon Mars, perhaps inferior to themselves and ready to welcome a missionary enterprise.

When the mind grapples with a great and intricate problem, it makes its advances step by step, with but little realization of the gains it has made, until suddenly, with an effect of abrupt illumination, it realizes its victory.

They haven't any spirit in them - no proud dreams and no proud lusts; and a man who hasn't one or the other-Lord! What is he but funk and precautions.

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.

An artist who theorizes about his work is no longer artist but critic.

He who does not contemplate the future is destined to be overwhelmed by it.

I see knowledge increasing and human power increasing, I see everincreasing possibilities before life, and I see no limits set to it all. Existence impresses me as a perpetual dawn. Our lives, as I apprehend them, swim in expectation.