No human being can destroy the structure of a marriage except the two who made it. It is the one human edifice that is impregnable except from within.

uproar against a new idea, and laws to prevent anybody's accepting it, nearly always can be regarded as a signal that the new idea is just about to be taken for granted. ... they didn't start making laws to prohibit the teaching of evolution until everybody was about to take it for granted.

The rich and powerful want to believe in their right to be rich and powerful, so they justify it by saying they are inherently superior to the poor and lowly.

We can get the new world we want, if we want it enough to abandon our prejudices, every day, everywhere. We can build this world if we practice now what we said we were fighting for.