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当我们在这里讨论生物界的各种生命现象时,我们会感到现有的科学知识是多么不够。在化学还未进入到有机生命的领域时,我俩就还不能深刻的揭露生命的秘密,我们至今还只能依据着经验,和表象的观察来进行研究。科学的发展形式就是“假说”,它最初只是以有限的事突和观察为基础,随着新的事实,新的观察不断的发现,旧的假说就不适用了,就要对它进行修正,补充。最后“假说”不断的趋于完善,而成为“定律”。然而任何“定律”都不是绝对的,它随着科学的发展,或者被推翻,或者被修正。“永恒的定律愈来愈变成历史的了。”(恩格斯)人类对事物的认识是受着历史条件的限制的,但只要历史在发展,人类的认识也随着发展。
When we discuss the various life phenomena in the biological world here, we feel just how inadequate existing scientific knowledge is. When chemistry has not yet entered the realm of organic life, we can not yet reveal the secret of life profoundly. So far, we can still only study on the basis of experience and observation of appearance. The form of scientific development is the “hypothesis,” which was originally based on limited events and observations. As new facts and new observations constantly discover that the old hypothesis does not apply, it is necessary to amend it, supplement. Finally, “Hypothesis” continues to improve, and become “law.” However, any “law” is not absolute. With the development of science, it is either overthrown or amended. “The law of eternity is increasingly becoming history.” (Engels) Human knowledge of things is conditioned by historical conditions, but so long as history is developed and human knowledge develops.