"All the time in the world is never quite enough
All the time that I have is all that's necessary"
is talking about spending time with a lover. You just can't spend enough time with her/him, ie all the time in the world is not enough. And all the time that you have is how much you want to spend with them, ie all that's necessary.
I think the lines
"All the time in the world is never quite enough All the time that I have is all that's necessary"
is talking about spending time with a lover. You just can't spend enough time with her/him, ie all the time in the world is not enough. And all the time that you have is how much you want to spend with them, ie all that's necessary.
Hope this helped ;)