Humanity is not an aggregate of individuals, a community of thinkers, each of whom is guaranteed from the outset to be able to reach agreement with the others because all participate in the same thinking essence. Nor, of course, is it a single Being in which the multiplicity of individuals are dissolved and into which these individuals are destined to be reabsorbed. As a matter of principle, humanity is precarious: each person can only believe what he recognizes to be true internally and, at the same time, nobody thinks or makes up his mind without already being caught up in certain relationships with others, which leads him to opt for a particular set of opinions. Everyone is alone and yet nobody can do without other people, not just because they are useful (which is not in dispute here) but also when it comes to happiness.
Maurice Merleau-Ponty