We need pray for no higher heaven than the pure senses can furnish, a purely sensuous life. Our present senses are but the rudiments of what they are destined to become. We are comparatively deaf and dumb and blind, and without smell or taste or feeling. Every generation makes the discovery that its divine vigor has been dissipated, and each sense and faculty misapplied and debauched. The ears were made, not for such trivial uses as men are wont to suppose, but to hear celestial sounds. The eyes were not made for such groveling uses as they are now put to and worn out by, but to behold beauty now invisible. May we not see God? Are we to be put off and amused in this life, as it were with a mere allegory? Is not Nature, rightly read, that of which she is commonly taken to be the symbol merely?... But where is the instructed teacher? Where are the normal schools?
Henry David Thoreau (1817–1862), U.S. philosopher, author, naturalist. A Week on the Concord and Merrimack Rivers (1849), in The Writings of Henry David Thoreau, vol. 1, pp. 408-409, Houghton Mifflin (1906).