I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
Time is a concept that is derived from the way we perceive change.
I don't let the world change my smile.
Be realistic, demand the impossible!
在科学中，最令人兴奋的短语不是"我发现了！"而是"这有点奇怪..."
Ignoring isn’t the same as ignorance, you have to work at it.
真正的困难不在于构思新想法，而在于摆脱旧观念。