According to Descartes, one needs to think in order to exist, cogito ergo sum. I hypothesize there is a different pathway in the process of constructing an identity, that of the body and I suggest cogito corporel, "I feel, therefore I exist." After god’s death, it falls to individuals in post-modern Western societies to construct their own ontology. More and more of them are using the body as a vehicle on this road to self-discovery in search of meaning. In an era of accelerating social time and further dematerializations in the relationship with reality, the body could become a key to spatial and temporal access and rooting in the present. I propose here to adopt the body as a support for the senses (kinesthetic vehicle) and vector for the senses in the existence of modern man. Since the body is our general way of experiencing a world, I put forward the following hypothesis : "if I feel and experience my body and reality differently, therefore I exist differently".