Not the point, but I love this bit: > Lydia made the mistake of remarking, “What a beautiful tree,” presumably too casually, whereupon Wittgenstein glared and

Not the point, but I love this bit: > Lydia made the mistake of remarking, “What a beautiful tree,” presumably too casually, whereupon Wittgenstein glared and demanded, “What do you mean?” and she burst into tears.