When the impossible has been eliminated, all that remains no matter how improbable is possible.

The setting is a worthy one, if the devil did desire to have a hand in the affairs of men.

There is a danger there - a very real danger to humanity. Consider, Watson, that the material, the sensual, the worldly would all prolong their worthless lives. The spiritual would not avoid the call to something higher. It would be the survival of the least fit. What sort of cesspool may not our poor world become?

My sister and I, you will recollect, were twins, and you know how subtle are the links which bind two souls which are so closely allied.

There are no fools so troublesome as those who have some wit.

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.

To let the brain work without sufficient material is like racing an engine. It racks itself to pieces.