BTW, the author was a scientist and was referring not to religious faith but to scientists who have strong convictions about their unproved hypotheses.
Disclaimer: I find 10-dimensional string theory to be aesthetically pleasing from a mathematical perspective, but the experimental confirmation is nada at this point, because of the energy requirements. This is, at least in part, the reason for the Large Hadron Collider .
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The opposite of a fact is falsehood, but the opposite of one profound truth may very well be another profound truth. - Niels Bohr