If you heat an empty pot it bursts.
More German Proverbs:
A man has learned much who has learned how to die.German
Sue a beggar and catch a louse.
German
People talk about something until it actually happens.
German
Lean liberty is better than fat slavery.
German
Every beginning is hard, said the thief, when he began by stealing an anvil.
German
I will not change a cottage in possession for a kingdom in reversion.
German