I am a rank individualist.

My personal conviction is that science is concerned wholly with truth, not with ethics.

In a tribal organization, even in time of peace, service to tribe or state predominates over all self seeking; in war, service for the tribe or state becomes supreme, and personal liberty is suspended.

Reason has not tamed desire: it is as strong as ever.

The main force used in the evolving world of humanity has hitherto been applied in the form of war.

This world of ours has been constructed like a superbly written novel: we pursue the tale with avidity, hoping to discover the plot.

Before the discovery of agriculture mankind was everywhere so divided, the size of each group being determined by the natural fertility of its locality.