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

Abortion... was probably regarded by the average Roman of the later days of Paganism much as Englishmen in the last century regarded convivial excesses, as certainly wrong, but so venial as scarcely to deserve censure.

When men have appreciated the countless differences which the exercise of that judgment must necessarily produce, when they have estimated the intrinsic fallibility of their reason, and the degree in which it is distorted by the will, when, above all, they have acquired that love of truth which a constant appeal to private judgment at last produces, they will never dream that guilt can be associated with an honest conclusion, or that one class of arguments should be stifled by authority.

When the Church obtained the direction of the civil power, she soon modified or abandoned the tolerant maxims she had formerly inculcated; and, in the course of a few years, restrictive laws were enacted, both against the Jews and against the heretics.

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.

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

The moral duty to be expected in different ages is not a unity of standard, or of acts, but a unity of tendency ... At one time the benevolent affections embrace merely the family, soon the circle expanding includes first a class, then a nation, then a coalition of nations, then all humanity and finally, its influence is felt in the dealings of man with the animal world.