心灵是进化和学习的产物。
我们不试图预测未来；我们只是试图买入便宜的东西。
The battle to feed all of humanity is over. The battle to feed all of humanity in the future has just begun.
The beauty of mathematics lies not in its complexity but in its simplicity and the way it reveals hidden truths.
Our frustration is greater when we have much and want more than when we have nothing and want some. We are less dissatisfied when we lack many things than when we seem to lack but one thing.