The "Creed of Christendom" is alien to my nature, both emotional and intellectual.

The wise man must remember that while he is a descendant of the past, he is a parent of the future.

I emphasize the reply that the liberty which a citizen enjoys is to be measured, not by the nature of the governmental machinery he lives under, whether representative or other, but by the relative paucity of the restraints it imposes on him.

We must infer that a plant or animal of any species, is made up of special units, in all of which there dwells the intrinsic aptitude to aggregate into the form of that species: just as in the atoms of a salt, there dwells the intrinsic aptitude to crystallize in a particular way.‎

Progress is not an accident, not a thing within human control, but a beneficent necessity ... due to the working of a universal law. So surely must the things we call evil and immorality disappear; so surely must man become perfect.

We too often forget that not only is there 'a soul of goodness in things evil,' but very generally also, a soul of truth in things erroneous.

Practical atheism, seeing no guidance for human affairs but its own limited foresight, endeavors itself to play the god, and decide what will be good for mankind and what bad.