It had been boldly predicted by some of the early Christians that the conversion of the world would lead to the establishment of perpetual peace. In looking back, with our present experience, we are driven to the melancholy conclusion that, instead of diminishing the number of wars, ecclesiastical influence has actually and very seriously increased it.

The morals of men are more governed by their pursuits than by their opinions. A type of virtue is first formed by circumstances, and men afterwards make it the model upon which their theories are framed.

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.

I venture to maintain that there are multitudes to whom the necessity of discharging the duties of a butcher would be so inexpressibly painful and revolting, that if they could obtain a flesh diet on no other condition, they would relinquish it forever.

Almost all Europe, for many centuries, was inundated with blood, which was shed at the direct instigation or with the full approval of the ecclesiastical authorities.

In proportion to its power, Protestantism has been as persecuting as Catholicism.

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.