In this book Teilhard expounds the evolutionary history of the Earth, the arrival of the human species, and its destiny in the far future. He identifies certain threads of recurrence in evolution’s past, and uses these laws of recurrence to project the most probable future destiny of the planet. Teilhard’s ingenious conclusion is that evolution is in fact involuting on itself, meaning that the future (like the past) is one of convergence and synthesis, heading towards a single unity he calls the Omega Point.