“The very reason we need logic at all is because most reasoning is not conscious at all.”
Book I, Chapter 1, p. 41
The Origin of Consciousness in the Breakdown of the Bicameral Mind (1976)
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Julian Jaynes 43
American psychologist 1920–1997Related quotes

“All logical arguments can be defeated by the simple refusal to reason logically”
Source: Dreams of a Final Theory

“God's will is the very perfection of all reason.”
Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 283.

As quoted in "Lana Condor is just a girl, starring in a Netflix hit, asking you to love the rom-com revival" in Think Progress (18 September 2018) https://archive.thinkprogress.org/lana-condor-to-all-the-boys-netflix-1be6a8d818aa/

God and the State (1871; publ. 1882)
Context: I bow before the authority of special men because it is imposed upon me by my own reason. I am conscious of my inability to grasp, in all its details and positive developments, any very large portion of human knowledge. The greatest intelligence would not be equal to a comprehension of the whole. Thence results, for science as well as for industry, the necessity of the division and association of labor. I receive and I give — such is human life. Each directs and is directed in his turn. Therefore there is no fixed and constant authority, but a continual exchange of mutual, temporary, and, above all, voluntary authority and subordination.

Source: Other writings, Felix Frankfurter Reminisces (1960), P. 189.