Click on the phrases to see them in context. The original texts by Immanuel Kant and David Hume are available from the Gutenberg Projet.
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As the custom depends not upon any deliberation, it operates immediately, without allowing any time for reflection. Thus, when I say that certain events occurred in past time, I merely assert the possibility of prolonging the chain of experience, from the present perception, upwards to the conditions that determine it according to time. To that principle, therefore, we are to ascribe the sentiment of approbation, which arises from the survey of all those virtues, that are useful to society, or to the person possessed of them.