How did the primary ideas of the four major Hellenistic philosophies differ from each other?

Cynicism taught that people should live simply and naturally, without disregard for pleasure, wealth, or social status.

Skepticism taught that because the universe is always changing, all knowledge is uncertain. By accepting this fact, however, people can achieve peace of mind.

Stoicism teaches the divine reason directs the world. Thus, people should accept their fate without complaint.

Epicureanism teaches that the aim of life is to seek pleasure, and avoid pain. Epicurus said that people should limit their desires. This, he felt, was the best way to avoid suffering.