  We study the low energy part of the nucleon and $\Delta$ spectra by solving
the Schr\"{o}dinger equation for the three-quark system in the hyperspherical
harmonic approach. The quark-quark hamiltonian considered includes, besides the
usual one-gluon exchange, pion and sigma exchanges generated by the chiral
symmetry breaking. This quark-quark potential reproduces, in a Resonating Group
Method calculation, the nucleon-nucleon scattering phase shifts and the
deuteron properties. The baryonic spectrum obtained is quite reasonable and the
resulting wave function is consistent with the ansatz used in the two baryon
system.
