Fifteen-year-old Ari Mendoza is an angry loner with a brother in prison, but when he meets Dante and they become friends, Ari starts to ask questions about hims

Aristotle (384–322 BC) was an ancient Greek philosopher and scientist born in the city of Stagira, Chalkidiki, in the north of Classical Greece. Along with Pl

On the Heavens (Greek: Περὶ οὐρανοῦ, Latin: De Caelo or De Caelo et Mundo) is Aristotle’s chief cosmological treatise: written in 350 BC it cont