He who begins too much accomplishes little.
More German Proverbs:
Thrift is a great revenue.German
Who carries doubtful people to his house, will doubtless from his carriage something lose.
German
Princes have long hands and many ears.
German
What man has made, man can destroy.
German
I give a present to the mother but I think of the daughter.
German
When God says "today," the devil says "tomorrow."
German