There is no sea more dangerous than the ocean of practical politics none in which there is more need of good pilotage and of a single, unfaltering purpose when the waves rise high. – Thomas Huxley
Every great advance in natural knowledge has involved the absolute rejection of authority. – Thomas Huxley
The struggle for existence holds as much in the intellectual as in the physical world. A theory is a species of thinking, and its right to exist is coextensive with its power of resisting extinction by its rivals. – Thomas Huxley
Time, whose tooth gnaws away everything else, is powerless against truth. – Thomas Huxley
American influence in the world is certainly considerable, but the United States does not control, directly or indirectly, the politics and economics of other societies, as empires have always done, save for a few special cases that turn out to be the exceptions that prove the rule. – Michael Mandelbaum