  We show that three-quark axial currents as required by broken SU(6)
spin-flavor symmetry reduce the quark spin contribution to proton spin from
$\Sigma_p = 1$ (one-quark axial current value) to $\Sigma_p = 0.41(12)$
consistent with the empirical value $\Sigma_{p, exp} = 0.33(08)$. In the case
of the $\Delta^+(1232)$ baryon, we find that three-quark axial currents
increase the one-quark axial current value $\Sigma_{\Delta^+} = 3$ to
$\Sigma_{\Delta^+} = 3.87(22)$. We also calculate the quark orbital angular
momenta $L_u$ and $L_d$ in the proton and $\Delta^+$ and interpret our results
in terms of the prolate and oblate geometric shapes of these baryons consistent
with their intrinsic quadrupole moments.
