There are some politicians who, if their constituents were cannibals, would promise them missionaries in every pot.

The cure for the evils of democracy is more democracy.

The liberation of the human mind has never been furthered by dunderheads.

There is, in fact, no reason to believe that any given natural phenomenon, however marvelous it may seem today, will remain forever inexplicable. Soon or late the laws governing the production of life itself will be discovered in the laboratory, and man may set up business as a creator on his own account. The thing, indeed, is not only conceivable; it is even highly probable.

Human progress is furthered, not by conformity, but by aberration.

Suppose two-thirds of the members of the national House of Representatives were dumped into the Washington garbage incinerator tomorrow, what would we lose to offset our gain of their salaries and the salaries of their parasites?

Since the early days, [the church] has thrown itself violently against every effort to liberate the body and mind of man. It has been, at all times and everywhere, the habitual and incorrigible defender of bad governments, bad laws, bad social theories, bad institutions. It was, for centuries, an apologist for slavery, as it was an apologist for the divine right of kings.