Two Schrödinger-like Equations for hadrons

In this talk, based on [1, 2], I argue that the holographic Schrödinger Equation of (3 +1)-dim, conformal light-front QCD and ’t Hooft (1+1)-dim, large Nc QCD, can be complementary to each other in providing a first approximation hadron spectroscopy. Together, two equations play role hadronic physics analogous ordinary atomic physics.