All who strive to live for something beyond mere selfish aims find their capacities for doing good very inadequate to their aspirations. They do so much less than they want to do, and so much less than they, at the outset, expected to do, that their lives, viewed retrospectively, inevitably look like failure.

None speak of the bravery, the might, or the intellect of Jesus; but the devil is always imagined as a being of acute intellect, political cunning, and the fiercest courage. These universal and instinctive tendencies of the human mind reveal much.

The existence of very pious feelings, in conjunction with intolerance, cruelty, and selfish policy, has never ceased to surprise and perplex those who have viewed it calmly from a distance. ... It is impossible to exaggerate the evil work theology has done in the world. What destruction of the beautiful monuments of past ages, what waste of life, what disturbance of domestic and social happiness, what perverted feelings, what blighted hearts, have always marked its baneful progress!

Belief in oneself is one of the most important bricks in building any successful venture.

In the first place, an unjust law exists in this Commonwealth, by which marriages between persons of different color is pronounced illegal. I am perfectly aware of the gross ridicule to which I may subject myself by alluding to this particular; but I have lived too long, and observed too much, to be disturbed by the world's mockery.

Even if nothing worse than wasted mental effort could be laid to the charge of theology, that alone ought to be sufficient to banish it from the earth, as one of the worst enemies of mankind.

It is right noble to fight with wickedness and wrong; the mistake is in supposing that spiritual evil can be overcome by physical means.