Betterment of conditions the world over is not essentially dependent on scientific knowledge but on the fulfillment of human traditions and ideals.

The world as we have created it is a process of our thinking. It cannot be changed without changing our thinking.

Marriage is but slavery made to appear civilized.

I have tried 99 times and have failed, but on the 100th time came success.

... we will hope that future historians will explain the morbid symptoms of present-day society as the childhood ailments of an aspiring humanity, due entirely to the excessive speed at which civilization was advancing.

I didn't arrive at my understanding of the fundamental laws of the universe through my rational mind.

Long hair minimizes the need for barbers; socks can be done without; one leather jacket solves the coat problem for many years; suspenders are superfluous.