  It is shown that unification of gravity and electromagnetism can be achieved
using an affine non-symmetric connection $\Gamma^\lambda_{\mu\nu} \neq
\Gamma^\lambda_{\nu\mu}$ and $\Gamma_\mu = \Gamma^\lambda_{[\mu\lambda]}\neq
0$. $\Gamma_\mu$ is shown to be the source of the electromagnetic field. This
unification is based on {\em projective invariance} which is broken by matter
fields, opening up the possibility of a unified theory of all forces in which
gravity emerges as a classical field.
