Convergence

" We have been following the successive stages of the same grand progression from the fluid contours of the early earth. Beneath the pulsations of geo-chemistry, of geo-tectonic and of geo-biology, we have detected one and the same fundamental process, always recognizable-the one which was given material form in the first cells and was continued in the construction of nervous systems. We saw geogenesis promoted to biogenesis, which turned out in the end to be nothing less psychogenesis." Pierre Teilhard de Chardin, The Phenomenon of Man