French philosopher, Jesuit priest, and paleontologist
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The radical defect in all forms of belief in progress, as they are expressed in positivist credos, is that they do not definitely eliminate death. What is the use of detecting a focus of any sort in the van of evolution if that focus can and must one day disintegrate? To satisfy the ultimate requirements of our action, Omega must be independent of the collapse of the forces with which evolution is woven.
As a result of changes which, over the last century, have modified our empirically based pictures of the world and hence the moral value of many of its elements, the "human religious ideal" inclines to stress certain tendencies and to express itself in terms which seem, at first sight, no longer to coincide with the "christian religious ideal".
Those who adopt the spiritual explanation are right when they defend... a... transcendence of man over the rest of nature. But neither are the materialists wrong when they maintain that man is just one further term in a series of animal forms. Here, as in so many cases, the two antithetical kinds of evidences are resolved in a movement... to the highly natural... 'change of state'. From the cell to the thinking animal, as from the atom to the cell, a single process (a psychical kindling or concentration) goes on without interruption... in the same direction. But by virtue of this permanence in the operation, it is inevitable... that certain leaps... transform the subject of the operation.
Actuality, irreversibility. ...Omega ...is discovered ...at the end ...[I]n it the movement culminates. Yet... under this evolutive facet Omega still only reveals half of itself. While being the last term of its series, it is also outside all series. ...If by its very nature it did not escape from time and space which it gathers together, it would not be Omega.
His understanding of the method by which organisms become first individualised and then personalised gave him a number of valuable insights. Basically, the process depends on cephalisation — the differentiation of a head as the dominant guiding region of the body, forwardly directed, and containing the main sense-organs providing information about the outer world and also the main organ of co-ordination or brain.