One doesn't bother to believe the credible: the credible is believed already, by definition. There's no adventure of the mind.
Northrop FryeNo matter how much experience we may gather in life, we can never in life get the dimension of experience that the imagination gives us. Only the arts and sciences can do that, and of these, only literature gives us the whole sweep and range of human imagination as it sees itself
Northrop Frye