The Phenomenon of Man
 Teilhard views evolution as a process that leads to increasing complexity. From the cell to the thinking animal, a process of psychical concentration leads to greater consciousness. The emergence of Homo sapiens marks the beginning of a new age, as the power acquired by consciousness to turn in upon itself raises humankind to a new sphere. Borrowing Julian Huxley’s expression, Teilhard describes humankind as evolution becoming conscious of itself. In Teilhard's conception of the evolution of the species, a collective identity begins to develop as trade and the transmission of ideas increases. Knowledge accumulates and is transmitted in increasing levels of depth and complexity. This leads to a further augmentation of consciousness and the emergence of a thinking layer that envelops the earth. Teilhard calls the new membrane the “noosphere” (from the Greek “nous,” meaning mind), a term first coined by Vladimir Vernadsky. The noosphere is the Collective consciousness of humanity, the networks of thought and emotion in which all are immersed. The development of science and technology causes an expansion of the human sphere of influence, allowing a person to be simultaneously present in every corner of the world. Teilhard argues that humanity has thus become cosmopolitan, stretching a single organized membrane over the Earth. Teilhard describes the process by which this happens as a “gigantic psychobiological operation, a sort of mega-synthesis, the “super-arrangement” to which all the thinking elements of the earth find themselves today individually and collectively subject.” The rapid expansion of the noosphere requires a new domain of psychical expansion, which “is staring us in the face if we would only raise our heads to look at it.” In Teilhard’s view, evolution will culminate in the Omega Point, a sort of supreme consciousness. Layers of consciousness will converge in Omega, fusing and consuming them in itself. The concentration of a conscious universe will reassemble in itself all consciousnesses as well as all that we are conscious of. Teilhard emphasizes that each individual facet of consciousness will remain conscious of itself at the end of the process.