Always do right. This will gratify some people and astonish the rest.
Mark Twain

Faith in a holy cause is to a considerable extent a substitute for the lost faith in ourselves.
Eric Hoffer

It is not worth an intelligent man's time to be in the majority. By definition, there are already enough people to do that.
G. H. Hardy

The radical of one century is the conservative of the next. The radical invents the views. When he has worn them out the conservative adopts them.
Mark Twain

[It's] time for the human race to enter the solar system.
George W. Bush