The ones that love us never really leave us.
Dobby has no master. Dobby is a free elf!
Oh, HONESTLY, don't you two read?
The wand chooses the wizard.
You think the dead we loved truly ever leave us? You think that we don't recall them more clearly in times of great trouble?
... perhaps those who are best suited to power are those who have never sought it.
There is no good and evil, there is only power and those too weak to seek it.