master yoda said to anakin about his visions on Star Wars Episode 3, Revenge of the Sith, "Rejoice for those around us who transform into the Force. Mourn them, do not. Miss them, do not. Attachment leads to jealousy, the shadow of greed, that is" and Train yourself to let go of everything you fear to lose. my question is why master yoda do what he says. what I mean is; in episode 2 he could stop count dooku but he prefer save anakin and obi wan. and we also know, even he prefer the dark side, master yoda never give up about dooku, he always care him. so when yoda attached anyone is ok but only childhood fear is loosing someone he loved anakin cant attached anyone? any thought?