自然科学理论有规律性、预测性和普适性等特征； 社会科学理论有规律性、预测性和实践性等特征。

The theory of natural science is with the features of regularity, predictability and generalities, while theory of social science is with the features of regularity, predictability and practicality.

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科学认识是真、善、美的统一，我们对自然科学理论的评价，应当坚持真理评价、价值评价和美学评价的统一。

Science cognition is the unity of the true, the good and the beautiful. The evaluation over natural science theory should be based on the unity of evaluation of truth, value and aesthetics.

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