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Topic What most human beings really want to attain is not knowledge, but certainty. Gaining real knowledge requires taking risks and keeping the mind openbut most people prefer to be reassured rather than to learn the complex and often unsettling truth about anything. Rewritten Sample Writing It seems that many people have formed an unrealistic picture of the relationship between certainty and knowledge or truth. I am always amazed when I hear people saying that neither learning nor keeping an open mind can attain certainty. As far as I am concerned, if seeking reassurance, people need to gain real knowledge and make it possible for them to require unceasing study and keeping an open mind. To begin with, only after people have gained real knowledge can they be competent for a better comprehension of the world. As is known to all, revolution in the long historical river, no one can ignore the fact that the process whose human has undergone from ignorance to civilization. The most convincing example is the Heliocentric Theory of Copernicus, whose theory overthrew the opinions dominated by Aristotle, Ptolemy and Christianity and his ideas have changed the process of human civilization. This, however, is not the first such revolution in astronomical history or even in other historical disciplines, and probably will not be the last one either. Furthermore, human beings unremitting pursuit of knowledge is not for the sake of knowledge, but largely for the sake of their settled life goals and acquiring a degree of certainty about them. | 
