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.

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 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.

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

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.

Passions weaken, but habits strengthen, with age, and it is the great task of youth to set the current of habit and to form the tastes which are most productive of happiness in life.

Highly graduate taxation realizes most completely the supreme danger of democracy, creating a state of things in which one class imposes on another burdens which it is not asked to share, and impels the State into vast schemes of extravagance, under the belief that the whole costs will be thrown upon others.