If you cannot state a proposition clearly and unambiguously, you do not understand it.


Two Lucky People: Memoirs (ed. University of Chicago Press, 1999) - ISBN: 9780226264158


If you cannot state a proposition clearly and unambiguously, you do not understand it.

If you cannot state a proposition clearly and unambiguously, you do not understand it.

If you cannot state a proposition clearly and unambiguously, you do not understand it.

If you cannot state a proposition clearly and unambiguously, you do not understand it.