The title compound, C(33)H(24)N(4), was prepared by the reaction of a bifunctional aromatic diamine (4,4'-diamino-diphenyl-methane) and an aldehyde (quinoline-2-carboxaldhyde). The mol-ecule consists of two nearly planar (or r.m.s. deviation = 0.017 Å) 4-methyl-N-[(E)-quinolin-2-yl-methyl-idene]aniline moieties, which are linked by the methyl-ene group. The angle between the mean planes of the two benzene rings connected to the methyl-ene group is 77.86 (11)°.