The period of Catholic ascendancy was on the whole one of the most deplorable in the history of the human mind. . . . The spirit that shrinks from enquiry as sinful and deems a state of doubt a state of guilt, is the most enduring disease that can afflict the mind of man. Not till the education of Europe passed from the monasteries to the universities, not till Mohammedan science, and classical free thought, and industrial independence broke the sceptre of the Church, did the intellectual revival of Europe begin.

The contraction of theological influence has been at once the best measure, and the essential condition of intellectual advance.

The animal world being altogether external to the scheme of redemption, was regarded as beyond the range of duty, and the belief that we have any kind of obligation to its members has never been inculcated - has never, I believe, been even admitted - by Catholic theologians.

Faith always presented to the mind the idea of an abnormal intellectual condition, of the subversion or suspension of the critical faculties. It sometimes comprised more than this, but it always included this. It was the opposite of doubt and of the spirit of doubt. What irreverent men called credulity, reverent men called faith; and although one word was more respectful than the other, yet the two words were with most men strictly synonymous.

There are some poisons which, before they kill men, allay pain and diffuse a soothing sensation through the frame. We may recognize the hour of enjoyment they procure, but we must not separate it from the price at which it was purchased.

All over Europe the organs that represent dogmatic interests are in permanent opposition to the progressive tendencies around them, and are rapidly sinking into contempt. In every country in which a strong political life is manifested, the secularisation of politics is the consequence. Each stage of that movement has been initiated and effected by those who are most indifferent to dogmatic theology, and each has been opposed by those who are most occupied with theology.

When it began, Christianity was regarded as a system entirely beyond the range and scope of human reason; it was impious to question; it was impious to examine; it was impious to discriminate. On the other hand, it was visibly instinct with the supernatural. Miracles of every order and degree of magnitude were flashing forth incessantly from all its parts.