It is vain to fish without a hook, or learn to read without a book.
More Danish Proverbs:
If God give not bushelfuls, he gives spoonfuls.Danish
Rats and conquerors must expect no mercy in misfortune.
Danish
He who feeds a wolf, strengthens his enemy.
Danish
When the master hurts his foot the servants limp.
Danish
From children you must expect childish acts.
Danish
That's but an empty purse which is full of other men's money.
Danish