James Madison, Federalist 51:

The constant aim is…that the private interest of every individual may be a sentinel over the public rights.

Elia Kazan, on why he named names:

Reason 1: “I’ve got to think of my kids.”

Reason 2: “All right, I earned over $400,000 last year from theater. But Skouras [head of Twentieth-Century Fox] says I’ll never make another movie. You’ve spent your money, haven’t you? It’s easy for you. But I’ve got a stake.”