耐心和坚持是科学发现的无名英雄。

The greatest blessing of our democracy is freedom. But in the last analysis, our only freedom is the freedom to discipline ourselves.

If you lose or forget to bring a cable，adapter or charger，check with your hotel. Most hotels now have a drawer full of cables，adapters and chargers others have left behind，and probably have the one you are missing. You can often claim it after borrowing it.

有些无限比其他无限更大。

A man takes a rocket ship into the stars, and all I got is this broken guitar.