在没有其他信息的情况下，参数的最佳估计是其样本值。
做出伟大工作的唯一方法就是热爱你所做的事。
The fundamental 'formula' of Gestalt theory might be expressed in this way: There are wholes, the behavior of which is not determined by that of their individual elements, but where the part-processes are themselves determined by the intrinsic nature of the whole.