Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.
不要担心你在数学上遇到的困难;我敢保证我遇到的困难比你还大得多。
Consensus is the absence of leadership.
The biggest risk is not taking any risk at all.
相信你能行,你已经成功了一半。
You don't have to like it, but you have to accept that it's art.
Without forgetting it is quite impossible to live at all.