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"Those sexual instincts which are inhibited in their aims have a great functional advantage over those which are uninhibited. Since they are not capable of really complete satisfaction, they are especially adapted to create permanent ties; while those instincts which are directly sexual incur a loss of energy each time they are satisfied, and must wait to be renewed by a fresh accumulation of sexual libido, so that meanwhile the object may have been changed. The inhibited instincts are capable of any degree of admixture with the uninhibited; they can be transformed back into them, just as they arose out of them." (Freud. Group Psychology and the Analysis of the Ego. SE XVIII. 139)