If I devote myself to other pursuits and contemplations, I must first see, at least, that I do not do pursue them sitting upon another man's shoulders. I must get off him first, that he may pursue his contemplations too.
Henry David Thoreau (1817–1862), U.S. philosopher, author, naturalist. "Civil Disobedience," originally published as "Resistance to Civil Government" (1849), in The Writings of Henry David Thoreau, vol. 4, p. 365, Houghton Mifflin (1906).