  We evaluate the gluon and quark contributions to the spin of the proton using
an ensemble of gauge configuration generated at physical pion mass. We compute
all valence and sea quark contributions to high accuracy. We perform a
non-perturbative renormalization for both quark and gluon matrix elements. We
find that the contribution of the up, down, strange and charm quarks to the
proton intrinsic spin is
$\frac{1}{2}\sum_{q=u,d,s,c}\Delta\Sigma^{q^+}=0.191(15)$ and to the total spin
$\sum_{q=u,d,s,c}J^{q^+}=0.285(45)$. The gluon contribution to the spin is
$J^g=0.187(46)$ yielding $J=J^q+J^g=0.473(71)$ confirming the spin sum. The
momentum fraction carried by quarks in the proton is found to be $0.618(60)$
and by gluons $0.427(92)$, the sum of which gives $1.045(118)$ confirming the
momentum sum rule. All scale and scheme dependent quantities are given in the
$\mathrm{ \overline{MS}}$ scheme at 2 GeV.
