WTF? Proof? Maths? 1: what makes you think that a folk saying is valid as a proof?* 2: Yup. So what? 3: Therefore? How does "therefore" arise? Are you assuming that "highly intelligent people" only make friends with other "highly intelligent people"? Could you provide some evidence for this please? * It's been a long night for me so I can't, offhand, think of any other (equally rigorous Please Register or Log in to view the hidden image!) homily to contradict it. But, for example "Many hands make light work" vs. "Too many cooks spoil the broth".