鼻之所喜不可任也，口之所嗜不可随也。
出自《抱朴子·酒戒》。鼻子爱闻(酒)的气味，但却不能因此就去酗酒;嘴巴嗜好(酒)的滋味，但却不能因此就去滥饮。
I have always believed that the way to make money is to buy when everyone else is selling and to sell when everyone else is buying.
抽象不仅仅是隐藏细节；它是关于创建问题域的清晰简洁的模型。