物理Don't wait. The time will never be just right.

老师The key to success is to focus on goals, not obstacles.做科The only way to do great work is to love what you do.

普视频粉Don't wait. The time will never be just right.丝超Wake up with determination. Go to bed with satisfaction.千万The key to success is to focus on goals, not obstacles.

物理The harder you work for something, the greater you’ll feel when you achieve it.老师Dream it. Wish it. Do it.

做科In the midst of winter, I found there was, within me, an invincible summer.

普视频粉You don’t have to be great to start, but you have to start to be great.丝超Believe you can and you're halfway there.

千万Don’t stop when you’re tired. Stop when you’re done.物理Keep your face always toward the sunshine, and shadows will fall behind you.

老师Believe you can and you're halfway there.做科It’s going to be hard, but hard does not mean impossible.