If there is anything you need, I will not be far away.
随机实验是因果推理的黄金标准,但它们并不总是可行的。
The only real voyage of discovery consists not in seeking new landscapes, but in having new eyes.
Human life can not be measured by the length of time. When the heart is full of love, the moment is eternal! ——It really can’t be measured by the length of time.