Delta Wave Activity

Famous quotes containing the words wave and/or activity:

“Down the blue night the unending columns press
In noiseless tumult, break and wave and flow,”
—Rupert Brooke (1887–1915)

“History does nothing; it does not possess immense riches, it does not fight battles. It is men, real, living, who do all this.... It is not “history” which uses men as a means of achieving—as if it were an individual person—its own ends. History is nothing but the activity of men in pursuit of their ends.”
—Karl Marx (1818–1883)