Joseph B. Wirthlin

The light from the sun breaks through space, bathing our planet as it encircles the sun with life-giving warmth and light. Without the sun, there could be no life on this planet; it would be forever barren, cold, and dark.

I think one of the most important directions to be pursued in the 'sciences of human action' is to develop a natural-law ethics based on nature rather than, or at least to supplement, ethics based on theological revelation.