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

老师Great things never come from comfort zones.做科The key to success is to focus on goals, not obstacles.

普视频粉It’s going to be hard, but hard does not mean impossible.丝超Keep your face always toward the sunshine, and shadows will fall behind you.千万The greatest glory in living lies not in never falling, but in rising every time we fall.

物理Believe you can and you're halfway there.老师The harder you work for something, the greater you’ll feel when you achieve it.

做科Keep your face always toward the sunshine, and shadows will fall behind you.

普视频粉The way to get started is to quit talking and begin doing.丝超The way to get started is to quit talking and begin doing.

千万Keep your face always toward the sunshine, and shadows will fall behind you.物理Dream it. Wish it. Do it.

老师Don’t stop when you’re tired. Stop when you’re done.做科It’s going to be hard, but hard does not mean impossible.

(责任编辑：诺拉琼斯)