They must often change, who would be constant in happiness or wisdom. Those who continually search for happiness will never find it. Happiness is made, not found. To be without some of the things you want is an indispensable part of happiness.

Only in thought is man a God; in action and desire we are the slaves of circumstance.

Official morality has always been oppressive and negative: it has said "thou shalt not," and has not troubled to investigate the effect of activities not forbidden by the code.

I do not think any reasonable person can doubt that in India, China and Japan, if the knowledge of birth control existed, the birthrate would fall very rapidly

The Mormons had a divine revelation in favour of polygamy, but under pressure from the United States Government they discovered that the revelation was not binding.

In emancipation from the fears that beset the slave of circumstance he will experience a profound joy, and through all the vicissitudes of his outward life he will remain in the depths of his being a happy man.

Men fear thought as they fear nothing else on earth - more than ruin, more even than death.