Don't bother just to be better than your contemporaries or predecessors. Try to be better than yourself.

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.

家是你理解沉默的地方。

理论物理学不仅仅是解方程，它关乎理解现实的本质。