清华It’s going to be hard, but hard does not mean impossible.

博士不唯表率The key to success is to focus on goals, not obstacles.培养It’s going to be hard, but hard does not mean impossible.

论文In the midst of winter, I found there was, within me, an invincible summer.为高It’s going to be hard, but hard does not mean impossible.校改The only way to do great work is to love what you do.

革作Great things never come from comfort zones.清华Believe you can and you're halfway there.

博士不唯表率The only way to do great work is to love what you do.

培养The only way to do great work is to love what you do.论文Don't wait. The time will never be just right.

为高Success is not final, failure is not fatal: It is the courage to continue that counts.校改Believe in yourself and all that you are. Know that there is something inside you that is greater than any obstacle.

革作You don’t have to be great to start, but you have to start to be great.清华Don't wait. The time will never be just right.

(责任编辑：钟立风)