As the subject delivers more and more painful shocks, he must seek to justify to himself what he has done; one form of justification is to go to the end. For if he breaks off, he must say to himself: “Everything I have done to this point is bad, and I now acknowledge it by breaking off.” But, if he goes on, he is reassured about his past performance. Earlier actions give rise to discomforts, which are neutralized by later ones.
