Перевод - Angels have to cry too, one should ... (Английский)

How do you know what is meant, iamfromaustria? Is this a common saying in German?

No, but it's obvious that it can't be the warmth they produce themselves, that you have to give to them. It's about the same when you say "Man muss ihnen ihre Freiheit lassen". It's also not exactly their freedom, but the freedom they need.

Aha - I get it now - thanks for the explanation!

No problem. It's often impossible for a non-native to know these nice little details of a language.... but that's what I'm here for, right?