Famous quotes containing the words scientific and/or theories:
“Bad times have a scientific value. These are occasions a good learner would not miss.”
—Ralph Waldo Emerson (1803–1882)
“The theories and speculations of men concern us more than their puny accomplishment. It is with a certain coldness and languor that we loiter about the actual and so-called practical.”
—Henry David Thoreau (1817–1862)