| A | B |
| Epicureanism | Believed that the goal of human life was pleasure through the senses. They believed the senses were infallible and detected the matter that was made up of atomic collisions and image flakes. |
| Stoicism | Believed that knowledge comes through logic and experience and the key to human happiness was avoiding vice and emotions and embracing apathy. They were probably no fun at parties. |
| Cynicism | Believed that happiness came from rigorous training and living in a natural way for humans - simply with few possessions and no desire for wealth, fame or power. |
| Skepticism | Believed that we can know nothing with certainty and so the key to human happiness is the peace that comes from no commitments, opinions or passion. |
| Eclecticism | Like Neo-Platonism, this philosophical school combined various teachings into new philosophies |
| Socrates | Sought to find the truth for truth's sake. Didn't believe in writing his opinions down because then people would stop searching for the truth. |
| Plato | Believed in seeking the truth for the betterment of the state and that there are two levels of reality - the realm of our senses and an abstract world of forms. |
| Aristotle | An empiricist who believed that the world was 100% real and that experience was the basis for all human endeavors. |