During the period from Descartes to Rousseau, the mind changed. Its domain was redefined; its activities were redescribed; and its various powers were redistributed. Once a part of cosmic Nous, its various functions delimited by its embodied condition, the individual mind now becomes a field of forces with desires impinging on one another, their forces resolved according to their strengths and directions. Of course since there is no such thing as The Mind Itself, it was not the mind that changed. Conceptions of the mind changed. Yet even to say this is misleading, because it suggests that somewhere out there in nowhere there is Nous, Psyche, Soul or Mind, the true but opaque object of all these conceptions. But of course there is no Mind in the realm of things in themselves, waiting for us to see it truly, like a China of the noumenal world, amused that our various conceptions reveal as much about ourselves as about it.

Gallant hero of romantic film, who has just killed his equally gallant antagonist in a duel: ‘Was I wrong, father?’ Father (Yul Brynner): ‘You were both wrong; and you were both right, too.’

David Hume, speaking of moral sceptics, once said ‘And as reasoning is not the source, whence either disputant derives his tenets; it is in vain to expect, that any logic, which speaks not to the affections, will ever engage him to embrace sounder opinions‘. I am guilty of an inconsistency of some kind in quoting the above passage from Hume with approval for, though everything Hume wrote ought to be quoted with approval, it is inconsistent to approve of advice, and then immediately to disregard it. I am also guilty of an inconsistency of another kind. Once upon a time I myself defended a version of moral scepticism, but I can say in mitigation of this deplorable act that my tongue was partly in my cheek at the time, which is where one's tongue should be on the occasion of addressing the Joint Session of the Mind Association and the Aristotelian Society.

In his article ‘Saints and Heroes’, Urmson argues that traditional moral theories allow at most for a threefold classification of actions in terms of their worth, and that they are therefore unsatisfactory. Since the conclusion of his argument has led to the widespread use of the term ‘acts of supererogation’, and since I do not believe that such acts exist, I propose to argue that the actions with which he is concerned not only can, but should, be contained within the traditional classification.

Every body cell of an animal or human being contains the same complete set of genes. In theory any of these cells can be used to start a new embryo. The technique has been employed in the case of frogs. The nucleus is taken out of a body cell of a frog and implanted in an enucleated frog's egg. The resulting egg cell is stimulated to develop into a normal frog, and will be an exact copy of that frog which provided the nucleus with all the genetic information. In normal sexual reproduction, two parents each contribute half their genes, but in the case of cloning, one parent passes on all his or her genes.

In 1942, replying to a criticism put to him by Langford, G. E. Moore confessed that he was unable to solve the paradox of analysis. But while conceding inability to solve the puzzle Moore offered the following suggestion, which he did not further develop: I think that, in order to explain the fact that, even if ‘To be a brother is the same thing as to be a male sibling’ is true, yet nevertheless this statement is not the same as the statement ‘To be a brother is to be a brother’, one must suppose that both statements are in some sense about the expressions used as well as about the concept of being a brother. But in what sense they are about the expressions used I cannot see clearly; and therefore I cannot give any clear solution to the puzzle.

In Chapters 6 and 7 of Language, Truth and Poetry I attempted to solve the ancient problem of fictional reference by claiming that a fictional construct (such as ‘Pickwick’ or ‘centaur’) ‘points’ or refers to certain features of reality in rather the same way as an abstraction like ‘gravitation’ or ‘cruelty’ does. I now believe that this theory of mine is unsatisfactory; and I should like to propose a new solution to the problem.