No man is content.
人心不足蛇吞象。
【解释】: A man whose heart is not content is like a snake which tries to swallow an elephant.
比喻人贪心不足,就像蛇想吞食大象一样。
【出 处】:《山海经海内南经》:“巴蛇食象,三岁而出其骨。” 战国楚·屈原《天问》:“一蛇吞象,厥大何如?”