What makes this observation cut so deep is that Saint-Exupéry isn't merely advising caution—he's describing an irreversible *transformation of the self*. You don't simply owe something to what you've tamed; the act of taming changes your inner architecture, making you a different person than you were before. A parent who adopts a child, a friend who confides their secrets to you, even a dog you've taken in from the street—each of these relationships doesn't just add a responsibility to your ledger, it rewrites who you are, making it impossible to return to your former state of innocence or indifference. This is why ghosting someone we've grown close to feels like a small moral catastrophe: we're not just breaking a promise, we're denying something fundamental about the people we've become.