In the elemental emotions of fear and rage associated with the most primitive parts of the brain, this swift response without conscious intervention or direction is a condition of survival: but something more than survival comes forth from it; for this very automatism freed the growing brain and ramifying nervous system for more important services, detached from the immediate pressure for survival, performed by the new brain. Here by his conscious symbolic activities man created a second realm that conforms more closely to his higher personal and social needs.

pg 397 - The Myth of the Machine (1967-1970) - The Pentagon of Power (1970)