Famous quotes containing the words frontier, transit and/or system:
“It is very perplexing how an intrepid frontier people, who fought a wilderness, floods, tornadoes, and the Rockies, cower before criticism, which is regarded as a malignant tumor in the imagination.”
—Edward Dahlberg (1900–1977)
“My esoteric doctrine, is that if you entertain any doubt, it is safest to take the unpopular side in the first instance. Transit from the unpopular, is easy ... but from the popular to the unpopular is so steep and rugged that it is impossible to maintain it.”
—William Lamb Melbourne, 2nd Viscount (1779–1848)
“Science is a system of statements based on direct experience, and controlled by experimental verification. Verification in science is not, however, of single statements but of the entire system or a sub-system of such statements.”
—Rudolf Carnap (1891–1970)