Eagleton has spent his life inside two mental boxes, Catholicism and Marxism, of both of which he is a severe internal critic—that is, he frequently kicks and scratches at the inside of the boxes, but does not leave them. Neither are ideologies that loosen their grip easily, and people who need the security of adherence to a big dominating ideology, however much they kick and scratch but without daring to leave go, hold on to it every bit as tightly as it holds onto them. The result is of course strangulation, but alas not mutual strangulation: the ideology always wins.