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.


Selected works of Thomas H. Huxley (ed. 1893)

Thomas Henry Huxley Quotes

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...

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...

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...

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...