Deep in the human nature, there is an almost irresistible tendency to concentrate physical and mental energy on attempts at solving problems that seem to be unsolvable. Indeed, for some kinds of active people, only the seemingly unsolvable problems can arouse their interest.

Ragnar Frisch
0
Deep in the human nature, there is an almost irresistible tendency to concentrate physical and ment
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Deep in the human nature, there is an almost irresistible tendency to concentrate physical and ment
Deep in the human nature, there is an almost irresistible tendency to concentrate physical and ment
Deep in the human nature, there is an almost irresistible tendency to concentrate physical and ment
Deep in the human nature, there is an almost irresistible tendency to concentrate physical and ment
Deep in the human nature, there is an almost irresistible tendency to concentrate physical and ment
Deep in the human nature, there is an almost irresistible tendency to concentrate physical and ment
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