Love alone is capable of uniting living beings in such a way as to complete and fulfill them, for it alone takes them and joins them by what is deepe… - Pierre Teilhard de Chardin

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.

[W]e realise... the fact and... reason for the diversity of animal behaviour. From the moment we regard evolution as... psychical transformation, we see... a multitude of forms of instincts each corresponding to a... solution of the problem of life. The 'psychical' make-up of an insect is not and cannot be that of a vertebrate ; nor can... [that] of a squirrel be that of a cat or... elephant: this in virtue of the position[s]... on the tree of life. ...[W]e begin to see ...a gradation formed. If instinct is a variable dimension, the instincts will... create, beneath their complexity, a growing system. They will form as a whole a... fan-like structure in which the higher terms on each nervure are recognised... by a greater range of choice and depending on a better defined centre of coordination and consciousness. ...The 'psychical' make-up of a dog... is... superior to that of a mole or a fish. ...[T]he upholders of the spiritual explanation have no need to be disconcerted when they see... in the higher animals (particularly in the great apes) ways and reactions which strangely recall... 'a reasoning soul'. If the story of life is no more than a movement of consciousness veiled by morphology, it is inevitable that... in the proximity of man, the 'psychical' make-ups seem to reach the borders of intelligence.