Failure is just a stepping stone to success. It's not the end, it's just part of the journey.
天要使一个人遭祸，必先给他一点小小的好处使他轻信；天要使一个人受福，必先给他一点小小的祸患使他有所警惕。
You can't manage what you don't measure.
On the path of science, there are no smooth roads to take; only those who are not afraid of hard work and climb the steep mountain paths have the hope of reaching the glorious summit.