On Generation and CorruptionAristotleRead freeAppears in 4 ideasScienceElementWhat are the basic building blocks of the physical world, and how do they combine to form complex things?MetaphysicsChangeWhat is change, and how can something become what it was not?QualityAre the qualities we perceive in things real properties of nature, or projections of the mind?Natural ScienceMechanicsWhat are the fundamental laws governing the motion and equilibrium of bodies?