《战国策·魏四·魏王与龙阳君共船而钓》
龙阳君回答说： 臣下刚钓到鱼的时候，臣下很高兴，后钓到的鱼更加大了，现在臣下只想抛弃先前所钓到的鱼。
对曰： 臣之始得鱼也，臣甚喜，后得又益大，今臣直欲弃臣前之所得矣。
Lord Longyang replied: When subject first caught the fish, subject was very happy. Later, subject caught a bigger fish; now, subject only want to throw away those previously caught fish.