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The true sacrifice is in one body. "The slave [captive] represents the master's [victor's] body offered to the god, the former being merely a symbol for the latter." … The identity of the sacrificer and the victim: the sacrifice of identity. The last cruel sacrifice is sacrifice of the separateness or the self; self-sacrifice, self-slaughter, self-annihilation. The last cruel sacrifice is the crucifixion of the self.

Before the ‘sacrifice’ in Death, the sacrifice in ‘Orgasm’.

The true sacrifice is total, a making holy of the whole; the false sacrifice sacrifices a part, [pars pro toto]; a part cut off, bitten off; the part; castration. Partial incorporation is castration; the part eaten, when the eating is partial, is always a penis.
Castration is mitigated (symbolic) cannibalism; THE ORIGINAL AIM IS TO EAT, AND TO EAT ALL. [emphasis added by Lenkiewicz]

Fenichel, Roheim, Lewin.

… “Power into will, will into appetite;
And appetite an universal wolf.
So doubly seconded with will and power,
Must make perforce an universal prey,
And last eat himself up.”

Ulysses in Shakespeare’s Troilus and Cressida.