The philosopher’s points could be summed up as follows: People can be truly aware of their worth only when they are able to feel “I am of use to someone.” However, it doesn’t matter if the contribution one makes at such a time is without any visible form. It is enough to have the subjective sense of being of use to someone, that is to say, a feeling of contribution. And then the philosopher arrives at the following conclusion: Happiness is the feeling of contribution.