Famous quotes containing the words physical, productive and/or capacity:
“There could be no fairer destiny for any physical theory than that it should point the way to a more comprehensive theory in which it lives on as a limiting case.”
—Albert Einstein (1879–1955)
“This [new] period of parenting is an intense one. Never will we know such responsibility, such productive and hard work, such potential for isolation in the caretaking role and such intimacy and close involvement in the growth and development of another human being.”
—Joan Sheingold Ditzion and Dennie Palmer (20th century)
“Man’s capacity for justice makes democracy possible, but man’s inclination to injustice makes democracy necessary.”
—Reinhold Niebuhr (1892–1971)