We start from the postulate that the arena for physics is a multidimensional space of matter configurations. As an example we consider strings and branes. They can be sampled in terms of the center of mass and oriented $r$-dimensional areas which can be elegantly represented b Clifford numbers. Starting from the spacetime $M_{1,3}$, we thus arrive at the Clifford algebra $Cl (8,8)$ which we consider a tangent space of a 16-dimensional manifold, the so called Clifford space. In this picture spinors are just particular Clifford numbers, namely the elements of a chosen minimal left ideal of $Cl(1,3)$. As a next step we take into account that $Cl(1,3)$ is a vectors space, now denoted $V_{8,8}$, that can be given a "life" of its own and considered to be spanned by a set of 16 basis vectors $e_A$, satisfying $e_A \cdot e_B= \eta_{AB}$, and hence being generators of the Clifford algebra $Cl(8,8)$. The later algebra has a lot of room for a unification of particles and forces.