Modus Tollens - Formal Proof

Famous quotes containing the words formal and/or proof:

“Good gentlemen, look fresh and merrily.
Let not our looks put on our purposes,
But bear it as our Roman actors do,
With untired spirits and formal constancy.”
—William Shakespeare (1564–1616)

“To cease to admire is a proof of deterioration.”
—Charles Horton Cooley (1864–1929)