Is it - >
Knowledge
It's not good to let me be away, down, off or out. Stand your ground!
We should not let the knowledge go away or reduce(down), off or out. We should hold on to it.
It's good to let me go up so that when things go down, you can put them up again!
It's good to grow it so that when required specially in bad conditions, we can put it up and use it to make the conditions alright.
If you got mine, then I got yours! All for one and one for all!
Sharing knowledge
If you are on me, please get off me, you are not my mom!
Not sure about this one. But if I take it literally, if you are sitting on a book or some knowledgeable thing, you should not. It's considered as unethical.
If you got a problem with me, don't say it to my face, that's just rude!
It's rude to treat knowledge in a bad way. If you have a problem learning, try harder.
Not sure if its anywhere close :) Just wanted to give it a shot