Keep your revolver near you night and day, and never relax your precautions.

I had hardly expected so dolichocephalic a skull or such well-marked supra-orbital development. Would you have any objection to my running my finger along your parietal fissure? A cast of your skull, sir, until the original is available, would be an ornament to any anthropological museum. It is not my intention to be fulsome, but I confess that I covet your skull.

It is not that I think or believe, but that I know.

Love has been taken away from the poets, and has been brought within the domain of true science. It may prove to be one of the great cosmic elementary forces. When the atom of hydrogen draws the atom of chlorine towards it to form the perfected molecule of hydrochloric acid, the force which it exerts may be intrinsically similar to that which draws me to you. Attraction and repulsion appear to be the primary forces. This is attraction.

Keep your revolver near you night and day, and never relax your precautions.

Dogmas of every kind put assertion in the place of reason and give rise to more contention, bitterness, and want of charity than any other influence in human affairs.

The weak man becomes strong when he has nothing, for then only can he feel the wild, mad thrill of despair.