Definition of "rationalist" [ra•tion•al•ist]

• A person who follows the philosophy of rationalism. (noun)

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• "What seems to go hand-in-hand with this definition of SF as profoundly rationalist is the application of an oppositional definition as regards Fantasy."
• "This led them to adopt the intellectualist thesis, or what we would call the rationalist thesis, regarding the mind's perception of metaphysical essences."
• "What disturbs the so-called rationalist in the mystic's attitude is his propensity to see mysteries where there are none and to fail to see those that we cannot possibly escape."