We are all walking around with an evolutionary user's manual in our heads, but most people don't realize it.
Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude.
Money can buy comfort, but not the deeper satisfactions of life.
抽象的目的不是模糊,而是创建一个新的语义层次,在这个层次上可以绝对精确。