What appeared to be lacking was not inspiration or even methodical habits of inquiry, but a consciously formulated technique of research, an art of interpretation, a method whose rules had been written down. And the project of making good this want was the occasion of the unmistakable emergence of the new intellectual character I have called the Rationalist. The dominating figures in the early history of this project are, of course, Bacon and Descartes, and we may find in their writings intimations of what later became the Rationalist character.

Rationalism in Politics and other essays (1962) - Rationalism in Politics (1947)