(Paraphrase) "Be careful about staring into the abyss. It may stare back at you." Somewhere in the CW of Nietzsche.
BTW, great pomo communist interpretation of Nietzsche entitled, "Nietzsche's Corp(se), " published by Duke Univ. Press. Reviewed in New Left Review recently. Author alludes to maoist political committments of the 60's. I assume he means PLP like in the case of Hillary Putnam.