Barrier/physics

Famous quotes containing the words barrier and/or physics:

“The want of education and moral training is the only real barrier that exists between the different classes of men. Nature, reason, and Christianity recognize no other. Pride may say Nay; but Pride was always a liar, and a great hater of the truth.”
—Susanna Moodie (1803–1885)

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