Moral Philosophy is the Science of human duty. The knowledge of human duty implies a knowledge of human nature. To understand what man ought to do, it is necessary to know what man is. Not that the Moral Philosopher, before entering upon those inquiries which peculiarly belong to him, must go over the Science of human nature in all its extent. But it is necessary to examine those elements of human nature which have a direct bearing upon human conduct.


William Fleming (1871), A Manual of Moral Philosophy: With Quotations and References for the Use of Students, Preface.

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Moral Philosophy is the Science of human duty. The knowledge of human duty implies a knowledge of human nature. To understand what man ought to do,...

Moral Philosophy is the Science of human duty. The knowledge of human duty implies a knowledge of human nature. To understand what man ought to do,...

Moral Philosophy is the Science of human duty. The knowledge of human duty implies a knowledge of human nature. To understand what man ought to do,...

Moral Philosophy is the Science of human duty. The knowledge of human duty implies a knowledge of human nature. To understand what man ought to do,...