History warns us that it is the customary fate of new truths to begin as heresies and to end as superstitions. – Thomas Huxley
The results of political changes are hardly ever those which their friends hope or their foes fear. – Thomas Huxley
The scientific imagination always restrains itself within the limits of probability. – 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