Do not do so as an academic critic, nor as a person drunk on art, nor as a barbarian in the literary market place. Do so as a sensitive person who has a few practical hunches about how stories can succeed or fail. Praise or damn as you please, but do so rather flatly, pragmatically, with cunning attention to annoying or gratifying details. Be yourself. Be unique. Be a good editor. The Universe needs more good editors, God knows.
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The Universe needs more teachers like that, God knows.