The founders of a new colony, whatever Utopia of human virtue and happiness they might originally project, have invariably recognized it among their earliest practical necessities to allot a portion of the virgin soil as a cemetery, and another portion as the site of a prison.

In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.

The most powerful way to change someone is to change the way you interact with them.