The Enneads, a work from the great philosopher Plotinus, has exerted a considerable influence on Western civilization, including our present time. Plotinus himself was taught by Ammonius Saccas, the "theodidactos", or God-taught philosopher in Alexandria who brought several philosophical systems together in his Neo-Platonic School. Those of this School were known as the "Philalethians" (lovers of the truth); while others named them the "Analogists," on account of 'their method of interpreting all sacred legends, symbolical myths and mysteries, by a rule of analogy or correspondence' as indeed one can find in the writings of Porphyry. In his Enneads he treats of the following topics: First Ennead: Human or ethical topics; Second and Third Enneads: cosmological subjects or physical reality; Fourth Ennead: about the Soul; Fifth Ennead: knowledge and intelligible reality; Sixth Ennead: Being and what is above it, the One or first principle of all.