An enemy that is surprised is already half-defeated.
More German Proverbs:
Cheating is the chapman's cart and plough.German
With nice appearance people want to be deceived.
German
He who is quick to borrow, is slow to pay.
German
Lightly come, lightly go.
German
Cheats never prosper.
German
The end of wrath is the beginning of repentance.
German