蓬生麻中 [- shēnɡ má zhōnɡ]The fleabane growing in the field of hemp becomes straight itself without support.; a raspberry grows among the hemp — influence of good friends; One can become a virtuous man if living among the virtuous.
•¶蓬生麻中，不扶自直。 When one is surrounded by the virtuous, he'll become upright himself.