The theory of light was, in fact, a subject which I had studied with great interest, and I had formed a definite opinion as to the nature of light.
事实上，光的理论是我非常感兴趣的研究课题，我对光的本质形成了明确的看法。
我认为对自己有幽默感，不要把自己看得太重是很重要的。
The secret of change is to focus all of your energy, not on fighting the old, but on building the new.
Only by working harder than others can you be more successful than others.
A book should feel like a friend to a child—comforting, exciting, and full of surprises.
只有准备充分，才可能成功。