José Ortega y Gasset decide and create a "project of life"—thus not be like those who live a conventional life of customs and given structures who prefer an unconcerned and imperturbable life because they are afraid of the duty of choosing a project. With a philosophical system that centered around life, Ortega y Gasset also stepped out of Descartes' "cogito ergo sum" and asserted "I live therefore I think". This stood at the root of his Kantian-inspired perspectivism, which he developed by adding a non-relativistic character in which absolute truth does exist and would be obtained by the sum of all perspectives of all
Cogito, ergo sum exists, then I exist"). In "Descartes, The Project of Pure Enquiry", Bernard Williams provides a history and full evaluation of this issue. Apparently, the first scholar who raised the "I" problem was Pierre Gassendi. He "points out that recognition that one has a set of thoughts does not imply that one is a particular thinker or another. Were we to move from the observation that there is thinking occurring to the attribution of this thinking to a particular agent, we would simply assume what we set out to prove, namely, that there exists a particular person endowed with the capacity