  We show that the recent MIT lattice QCD data for the pion's gravitational
form factors are, in the covered momentum transfer range, fully consistent with
the meson dominance principle. In particular, the $2^{++}$ component can be
accurately saturated with the $f_2(1270)$ meson, whereas the $0^{++}$ component
with the $\sigma$ meson. To incorporate the large width of the $\sigma$, we use
the dispersion relation with the spectral density obtained from the analysis of
the physical pion scattering data by Donoghue, Gasser, and Leutwyler. We also
discuss the implications of the perturbative QCD constraints at high momentum
transfers, leading to specific sum rules for the spectral densities of the
gravitational form factors, and argue that these densities cannot be of
definite sign.
