I believe that I can see a direction and a kind of progress for life. ... If my hypothesis is correct ... with their cyclical development horse, stag, and tiger became like the insect, to some extent prisoners of the instruments of their swift moving or predatory ways. ... In the case of primates, on the other hand, evolution went straight to work on the brain, neglecting everything else, which accordingly remained malleable.
Pierre Teilhard de Chardin
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