Smell is a fallen angel.

Once it was necessary that the people should multiply and be fruitful if the race was to survive. But now to preserve the race it is necessary that people hold back the power of propagation.

The joy of surmounting obstacles which once seemed unremovable, and pushing the frontier of accomplishment further — what joy is there like unto it?

Gullibility is the key to all adventures. The greenhorn is the ultimate victor in everything; it is he who gets the most out of life.

Good friends walk in when the old ones walk out.

Optimism, then, is a fact within my own heart. But as I look out upon life, my heart meets no contradiction. The outward world justifies my inward universe of good.

In times of danger large groups rise to the highest pitch of enthusiasm, courage and sacrifice . . . Mankind will be refashioned and history rewritten when this law is understood and obeyed.