Dead men tell no tales. A dead person cannot cause difficulties by revealing something that it would be preferable to conceal
Diamond cuts diamond. Refers to two people equally matched in wit or cunning
Diligence is the mother of good fortune. Hard work brings rewards
Distance makes the heart grow fonder. When you are separated from the person you love, your feelings are even stronger
Dogs of the same street bark alike. People from the same background have the same behavior