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The difference between the reason of man and the instinct of the beast is this, that the beast does but know, but the man knows that he knows.

John Donne, John E. Booty (1990). “John Donne: Selections from Divine Poems, Sermons, Devotions, and Prayers”, p.141, Paulist Press
The difference between the reason of man and the instinct of the beast is this, that the beast does but know, but the man knows that he knows.