To the intelligent man with an interest in human nature it must often appear strange that so much of the energy of the scientific world has been spent on the study of the body and so little on the study of the mind.
对于一个对人性感兴趣的聪明人来说，科学界把如此多的精力花在对身体的研究上，而对心灵的研究却如此之少，这一定常常显得很奇怪。
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Human Nature
Scientific
World