It is they [men of science] who hold the secret of the mysterious property of the mind by which error ministers to truth, and truth slowly but irrevocably prevails. Theirs is the logic of discovery, the demonstration of the advance of knowledge and the development of ideas, which, as the earthly wants and the passions of men remain almost unchanged, are the charter of progress, and the vital spark of history.
— JOHN DALBERG-ACTON, 1ST BARON ACTON