Both of his early treatises, De natura boni and De bono, start with a metaphysical investigation into the concepts of the good in general and the physical good. Albert refers to the physical good as bonum naturae. Albert does this before directly dealing with the moral concepts of metaphysics. In Alberts later works, he says in order to understand human or moral goodness, the individual must first recognize what it means to be good and do good deeds. This procedure reflects Alberts preoccupations with neo-Platonic theories of good as well as the doctrines of Pseudo-Dionysius. Albert's view was highly valued by the Catholic Church and his peers.