
Aristotle...
If we can't answer some quesions in life is very traditional that we try to respond those questions in myths trying to use fantasy in order to to fill that space of things that we don't know. By the other side Aristotle was a man who was worried of finding rational answers to everything that surrrounds us, so he talked about everything like sciences, methaphysics, physics, psicology, biology, math, arts, dialectics, geography, economy, justice, etc....
But there were three themes that he was more interested, these themes were;
Ethics, his ethic was that we all are in the search of eudaimonia that is the supreme good, and all the acts that the humans do are always in the search of finding a determinated good. So at the end goodnes is inside us.
The other point that he talked a lot about was Epistemology, konwledge, and Aristotle thought that only if you can think you are able to create something because this way you can question everything and determinate if something is justified or just invalid.
And also Aristotle was person who talked a lot about the reation of the citizen and the polis and he called this relation Politics, and politics for him should be developed in the best way in a polis, creating everything that is good in a polis because in a polis is where a citizen can adquire knowledge.
Aristotle was also a man who divided evrything in the world, he tried to organize everything that conforms the world the best way possible, and he thought that the best was to know if something is right its trough experimentation, and this way he let his legacy in the division of a lot of things that we learn now.