"The past is always tense, the future perfect."

人在年幼时就开始学习，用心容易专一，没有别的事情干扰，所以容易学成。有人说，14岁前是学习的黄金时期，暂不说其中的科学依据，对于孩子来说，他们的好奇心、理解力、想象力和创作力正处旺盛期，也是集中学习受干扰少的最佳时期，因此在孩子最佳培养阶段，家长要懂得培养。

检验一个假设的唯一方法是寻找所有反对该假设的信息。

If you believe that every life has equal value, it's revolting to learn that some lives are seen as worth saving and others are not. We said to ourselves: "This can't be true. But if it is true, it deserves to be the priority of our giving."