The only person you should try to be better than is the person you were yesterday.
You are the artist of your own life.
Other holidays repose upon the past; Arbor Day proposes for the future.
科学的美妙之处在于它让我们能够探索未知并揭开生命的奥秘。
我不后悔任何事情,因为每一步都让我走到了这里。