The mind or intellect, reason, both rational and emotional
In Neoplatonism, the divine reason, regarded as first divine emanation.
The "mind-set" of a society, culture, or group -- as in Homer's use in the third verse of the Odyssey.
Common sense; practical intelligence.
A philosopher, a person who writes or reasons in philosophy.
A person who creates superficial arguments or offers meaningless solutions, instead of practical ones.