  We introduce the $dipole$ $cosmological$ $principle$, the idea that the
Universe is a maximally Copernican cosmology, compatible with a cosmic flow. It
serves as the most symmetric paradigm that generalizes the FLRW ansatz, in
light of the increasingly numerous (but still tentative) hints that have
emerged in the last two decades for a non-kinematic component in the CMB
dipole. Einstein equations in our "dipole cosmology" are still ordinary
differential equations -- but instead of the two Friedmann equations, now we
have four. The two new functions can be viewed as an anisotropic scale factor
that breaks the isotropy group from $SO(3)$ to $U(1)$, and a "tilt" that
captures the cosmic flow velocity. The result is an axially isotropic, tilted
Bianchi V/VII$_h$ cosmology. We assess the possibility of model building within
the dipole cosmology paradigm, and discuss the dynamics of expansion rate,
anisotropic shear and tilt, in various examples. A key observation is that the
cosmic flow (tilt) can grow even while the anisotropy (shear) dies down.
Remarkably, this can happen even in an era of late time acceleration.
