Explanation:
The meaning of the sentence is that those people who are trying to take away something for you or force you to give something to them are not worth giving because they will always try to take more and more from you every time. People should give but wisely, and everyone should be careful and able to recognize who is worth giving and who is not. Good people will never force you to give them something, while bad will try to take away even the most important things from you.
