"I wish to propose for the reader's favourable consideration a doctrine which may, I fear, appear wildly paradoxical and subversive. The doctrine in question is this: that it is undesirable to believe a proposition when there is no ground whatever for supposing it true."

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I shall not fear to say that the doctrine of self-interest rightly understood seems to me of all the philosophic theories the most appropriate to the needs of men in our time, and that I see in it the most powerful guarantee against themselves that remains to them. The minds of the moralists of our day ought to turn, therefore, principally toward it. Even should they judge it imperfect, they would still have to adopt it as necessary.

— Alexis de Tocqueville