The joy of chemistry is in seeing the invisible become visible.
化学的乐趣在于看到不可见的东西变得可见。
The best solutions often come from those who work closest with the animals.
Be nice to your children because they are going to choose your nursing home.
The world needs your voice, don’t be afraid to use it.
The truth is not for all men, but only for those who seek it.
能够激发学生对一件善行或一首好诗的感受的教师，比那些用一排排自然物体填满我们记忆的人成就更大。