"Black Holes are Out of Sight" -- Stephen Hawking
'Shall I refuse my dinner because I do not fully understand the process of digestion?" -- Oliver Heaviside (1850-1925) English physicist.
"We see only what we know." -- Johann Wolfgang von Goethe (1749-1832) German poet, dramatist.
"What is is what must be". -- Gottfried Wilhelm von Leibnitz (1646-1716) German philosopher and mathematician.
"I believe there is no philosophical high-road in science, with epistemological signposts. No, we are in a jungle and find our way by trial and error, building our road behind us as we proceed." -- Max Born (1882-1970) German Physicist. Nobel Prize, 1954.