Pessimism leads to weakness, optimism to power.

改变没有错，如果方向正确的话。

Successful people maintain a positive focus in life no matter what is going on around them.

You have to believe in yourself when no one else does.

勇气是能站起来侃侃而谈。勇气也是能坐下来静静倾听。

因果推理的力量在于它允许我们预测我们从未采取的行动的效果。

我写作是为了找出我的想法。