If a single cell, under appropriate conditions, becomes a man in the space of a few years, there can surely be no difficulty in understanding how, under appropriate conditions, a cell may, in the course of untold millions of years, give origin to the human race.
Herbert SpencerThe preservation of health is a duty. Few seem conscious that there is such a thing as physical morality.
Herbert SpencerThe most important attribute of man as a moral being is the faculty of self-control.
Herbert Spencer