Deleuze, G. (1994) Difference and Repetition. A&C Black.

Conscience suffers from the following ambiguity: it can be conceived only by supposing the moral law to be external, superior and indifferent to the natural law; but the application of the moral law can be conceived only by restoring to conscience itself the image and the model of the law of nature. As a result, the moral law, far from giving us true repetition, still leaves us in generality. This time, the generality is not that of nature but that of habit as a second nature.

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Repetition belongs to humour and irony; it is by nature transgression or exception, always revealing a singularity opposed to the particulars subsumed under laws, a universal opposed to the generalities which give rise to laws.

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