and the state.14 To produce the finest human material, the state must regulate marriage: marital age, number and spacing of children, physical conditions for procreation and pregnancy, and quality of children. In that context he writes: Let there be a law that no deformed child shall be reared; but on the ground of number of children, if the regular customs hinder any of those born being exposed, there must be a limit fixed to the procreation of offspring, and if any people have a child as a result