"There is only passion"...or is there?

[Xakthul]

Indeed, can't one draw on positive passions i.e. love to draw on the light side? Is that not a positive emotion? One of the most important aspects of drawing on the light seems to achieving calm, serenity, while drawing to draw on the dark side is to embrace raw, chaotic emotion.

 

But can't one, with practice, remain calmly in control of one's emotions? Seems logical. And if so a Jedi could potentially use the dark side without impunity, is this not what Mace Windu does when using Vaapad.

 

Is that not what Windu also does at Utapau, Genosis, and Coruscant? Jedi feed off emotions too, although it is against their Code, quite often.