My retirement was now become solitude; the former is, I believe, the best state for the mind of man, the latter almost the worst. In complete solitude, the eye wants objects, the heart wants attachments, the understanding wants reciprocation. The character loses its tenderness when it has nothing to strengthen it, its sweetness when it has nothing to soothe it.
I mean people are really crazy about minor decrements down. And then, if you act on them, then you get into reciprocation tendency, because you don't just reciprocate affection, you reciprocate animosity, and the whole thing can escalate. And so huge insanities can come from just subconsciously over-weighing the importance of what you're losing or almost getting and not getting.