If we establish a standard of safe thinking, we will end up with no thinking at all. That is the only “safe” way, and that is, needless to say, the most precarious, dangerous, of all ways.

Henry Steele Commager (1902-1998) American historian, writer, activist

“What Ideas Are Safe?” Saturday Review (5 Nov 1949)
    (Source)

Reprinted in Freedom and Order (1966).