From the short story “Good Old Neon” by David Foster Wallace, collected in Oblivion. Narrator posthumously (sadly, foretellingly) recounts his meetings with his psychotherapist:

“For instance, it turned out that one of his basic operating premises was the claim that there were really only two basic, fundamental orientations a person could have toward the world, (1) love and (2) fear, and that they couldn’t coexist (or, in logical terms, that their domains were exhaustive and mutually exclusive, or that their two sets had no intersection but their union comprised all possible elements, or that

(ψx)((Fx – ~(Lx)) & (Lx – ~ (Fx))) & ~ ((эx) (~(Fx) & ~(Lx)),

meaning in other words that each day of your life was spent in service to one of these masters or the other, and ‘One cannot serve two masters’ – the Bible again – and that one of the worst things about the conception of competitive, achievement-oriented masculinity that America supposedly hardwired into its males was that it caused a more or less constant state of fear that made genuine love next to impossible. That is, that what passed for love in American men was usually just the need to be regarded in a certain way, meaning that today’s males were so constantly afraid of ‘not measuring up’ (Dr. G’s phrase, with evidently no pun intended) that they had to spend all their time convincing others of their masculine ‘validity’ (which happens to also be a term from formal logic) in order to ease their own insecurity, making genuine love next to impossible.

Although it seemed a little bit simplistic to see this fear as just a male problem (try watching a girl stand on a scale sometime), it turns out that Dr. Gustafson was very nearly right in his concept of the two masters – though not in the way that he, when alive and confused about his own real identity believed – and even while I played along by pretending to argue or not quite understand what he was driving at, the idea struck me that maybe the real root of my problem was not fraudulence but a basic inability to really love . . . .”

1 John 4:18: There is no fear in love, but perfect love casts out fear.