By Earl Barnes
If we go back to the earliest forms of life, where the unit is simply a minute mass of protoplasm surrounded by a cell wall, we find each of these divisions to be a complete individual. It can feed itself, that its life may go on to-day; it can fight or run away, that it may be here to fight to-morrow; and by a process of division it can create a new life so that its existence may continue across the generations. With such units it is quite conceivable that life might go on through all eternity, death following birth, were it not that protoplasm contains within itself a principle of change. Life and change are synonymous.
And this change moves ever toward a complexity, which we call development, where cells unite in a larger life, and functions and organs are specialized. Thus there comes a time when the part split off carries with it power to eat and digest, to fight or run away, but only half the power of procreation. This half unit, this incomplete individual, is either male or female, and from this time on, the epic of life gathers around the search of these half-lives for their complements. The force that impels to this search, while at first valuable only for the perpetuation of the generations, gathers into itself modifying feeling and desires and, at a later period, ideas and ideals, which finally, when men and women appear, make it the greatest of all the shaping forces in life.
The fact that sexual selection does not play the part in organic evolution which Darwin assigned it does not affect this statement. See chapter on Sexual Selection in Yves Delagee and Marie Goldsmith, The Theories of Evolution, New York: Huebsch.
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