“Fear leads to the Dark Side.”
“Fear leads to Anger,
Anger leads to Hate,
Hate… Leads to Suffering.”

- Yoda, Star Wars: Episode I

Just as it is practiced by Jedi Masters such as Mace Windu and Qui-Gon Jinn, the Jedi exclude all emotion from their lives, just like Zen Masters! You would be surprised how much of the Jedi code was influenced by Buddhism, particularly Zen Buddhism.