[The fact that Qui-Gon doesn't try to encourage him to get rid of his emotions completely helps his cause a lot more than he knows. Maybe because of Ezra's lack of a traditional Jedi childhood and upbringing, or maybe because it's just his nature, but Ezra's emotions are very much a part of him. He's had a hard time letting them go in the past.

So where he might balk at another Jedi's admonishments, Qui-Gon's reasoning at least gets Ezra to listen and consider, even if he's not sure if he agrees with it. (He's honestly not sure what he thinks about emotions and controlling them yet. But he knows he can't just tell himself they're gone.)]

If you're always letting it go, though, how can you understand it? A master I met back home told me, if I wanted to defeat my enemy, I had to know him. Couldn't the same thing be said here?