Russell's confession works precisely because he refuses the false hierarchy most of us construct—he doesn't crown knowledge as the enlightened pursuit or love as the ultimate good, but instead treats them as equals, then humbles both by placing compassion above. What's radical is the word "unbearable": pity isn't a gentle virtue here but a weight that compromises comfort, suggesting that moral seriousness means accepting that you cannot think your way out of other people's pain or love your way around it. A doctor might recognize this tension every morning—the knowledge that keeps her competent can feel cold against the suffering she witnesses, and the desire to comfort a patient doesn't always match what medicine can actually do. Russell's insight is that we don't resolve this tension; we live inside it.