Strew no roses before swine.
More Dutch Proverbs:
Young cats will mouse, young apes will louse.Dutch
Two cocks in one house, a cat and a mouse, an old man and young wife, are always in strife.
Dutch
A runaway monk never speaks well of his convent.
Dutch
The fox may lose his hair, but not his cunning.
Dutch
Were fools silent, they would pass for wise.
Dutch
When the devil gets into the church he seats himself on the altar.
Dutch