To let ourselves sink into the joyful moments of our lives even though we know that they are fleeting, even though the world tells us not to be too happy lest we invite disaster—that’s an intense form of vulnerability. The profound danger is that, as noted above, we start to think of feeling as weakness. With the exception of anger (which is a secondary emotion, one that only serves as a socially acceptable mask for many of the more difficult underlying emotions we feel), we’re losing our tolerance for emotion and hence for vulnerability.