Also the previous reflection on hedonistic method for Book ii. had shown me its weaknesses. What was then to be done? [The] conservative attitude [to be observed] towards Common Sense [is] given in chapter v. of Book iv.: “Adhere generally, deviate and attempt reform only in exceptional cases in which,--notwithstanding the roughness of hedonistic method,--the argument against Common Sense is decisive.”
In this state of mind I published my book: I tried to say what I had found: that the opposition between Utilitarianism and Intuitionism was due to a misunderstanding. There was indeed a fundamental opposition between the individual’s interest and either morality, which I could not solve by any method I had yet found trustworthy, without the assumption of the moral government of the world: so far I agreed with both Butler and Kant.
But I could find no real opposition between Intuitionism and Utilitarianism.... The Utilitarianism of Mill and Bentham seemed to me to want a basis: that basis could only be supplied by a fundamental intuition; on the other hand the best examination I could make of the Morality of Common Sense showed me no clear and self-evident principles except such as were perfectly consistent with Utilitarianism.
Still, investigation of the Utilitarian method led me to see defects [in it]: the merely empirical examination of the consequences of actions is unsatisfactory; and being thus conscious of the practical imperfection in many cases of the guidance of the Utilitarian calculus, I remained anxious to treat with respect, and make use of, the guidance afforded by Common Sense in these cases, on the ground of the general presumption which evolution afforded that moral sentiments and opinions would point to conduct conducive to general happiness; though I could not admit this presumption as a ground for overruling a strong probability of the opposite, derived from utilitarian calculations.”
It only remains to mention that the Table of Contents and the Index have been revised in accordance with the changes in the text.
[6] Cf. note on p. 457, and Prefatory Note to the Seventh Edition.
[7] Kant’s _Fundamental Principles_ (_Grundlegung zur Metaphysik der Sitten_), §§ 1, 2. Mill, _Utilitarianism_, pp. 5, 6 [7th edition (large print), 1879].