In statistical work, the right mathematical tool must be used for the right purpose.
在统计工作中，必须为正确的目的使用正确的数学工具。
One of the best rules anybody can learn about investing is to do nothing, absolutely nothing, unless there is something to do... I just wait until there is money lying in the corner, and all I have to do is go over there and pick it up.
你不能仅仅因为情况不理想就放弃某人。
真相很少是纯粹的，也从不简单。