John F. Kennedy once observed that "Our problems are man-made, therefore they may be solved by man."
约翰f .肯尼迪曾经说过：“我们的很多问题是人为的，因而人类能解决这些问题。”
As Eric Hoffer, an American social philosopher, once observed: "the search for happiness is one of the chief sources of unhappiness."
正如美国哲人，EricHoffer曾经说过的那样：“追求快乐是不快乐的主要原因。”
Philosopher and historian Will Durant once observed that the only thing that could get countries to join forces would be an alien invasion.
哲学家和历史学家Will Durant曾经评论到，能让国家联合起来的唯一办法是外星人入侵。
An excellent physicist once observed that in physics, Nobel Prizes are awarded for being correct while in economics they are often awarded for being brilliant.
一位卓越的物理学家曾注意到，在物理学界，获得诺贝尔奖是因为正确，而在经济学领域，获得诺贝尔奖常常是因为杰出。
Lao Tzu, the Great ancient Chinese thinker, once observed in his well-known work, the Tao te Ching, "he who knows others is intelligent; he who knows himself is wise."
中国古代伟大的思想家老子在《道德经》中说过：“知人者智，自知者明。”意思是说，了解别人叫明智，认识自己才是高明。
Oliver Wendell Holmes once observed that every profession is great that is greatly pursued.
奥利弗·温德尔·霍姆斯曾说，每一种备受追求的职业都是伟大的。
Winston Churchill once observed that dogs look up to us, cats look down on us but pigs treat us as equals.
邱吉尔曾说，狗仰头尊敬人，猫瞧不起人，猪则与人平起平坐。
A philosopher once observed that we cannot solve problems by using the same kind of thinking we used when we created them.
有哲人说过，当问题出现的时候，不能用曾经制造问题的办法去解决它。
Winston Churchill once observed that "the pessimist sees difficulty in every opportunity. The optimist sees the opportunity in every difficulty."
温斯顿﹒丘吉尔曾观测：悲观主义者将每次机会看成为困难，乐观主义者将每次困难看成机会。
Our success depends greatly on our ability to concentrate. 12 Henry Ward Beecher once observed, one hour of intense concentration can accomplish more than years of dreaming.
我们的成功很大程度上取决于我们的专注能力。亨利·沃德·比彻曾说过，一小时忘我的专注投入所得到的收获胜过多年的空想。
I have more than once observed to Lady Catherine that her charming daughter seemed born to be a duchess , and that the most elevated rank, instead of giving her consequence, would be adorned by her.
我跟咖苔琳夫人说过好多次，她的美丽的小姐是一位天生的公爵夫人，将来不管嫁给哪一位公爵姑爷，不论那位姑爷地位有多高，非但不会增加小姐的体面，反而要让小姐来为他争光。
I have more than once observed to Lady Catherine that her charming daughter seemed born to be a duchess , and that the most elevated rank, instead of giving her consequence, would be adorned by her.
我跟咖苔琳夫人说过好多次，她的美丽的小姐是一位天生的公爵夫人，将来不管嫁给哪一位公爵姑爷，不论那位姑爷地位有多高，非但不会增加小姐的体面，反而要让小姐来为他争光。
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