Barrier/physics

Famous quotes containing the words barrier and/or physics:

“The hearts of Afro-American women are too warm and too large for race hatred. Long suffering has so chastened them that they are developing a special sense of sympathy for all who suffer and fail of justice.”
—Fannie Barrier Williams (1855–1944)

“Although philosophers generally believe in laws and deny causes, explanatory practice in physics is just the reverse.”
—Nancy Cartwright (b. 1945)