It is hard to sail without wind, and to grind without water.
More Danish Proverbs:
One word beforehand is better than ten afterwards.Danish
He is most likely to spill who holds the vessel in his hand.
Danish
Drive not too many ploughs at once, some will make foul work.
Danish
It does not become the sparrow to mix in the dance of the cranes.
Danish
He who is afraid to ask is ashamed of learning.
Danish
He who has a glass roof on his own house, must not throw stones at others.
Danish