Like doctoral students footnoting their scholarship, the album includes snippets of some of the original texts from which they derived inspiration.

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So Zhang, an ardent Buddhist, had set off along what we know as the Silk Road, to purchase original texts to bring them home for careful translation.

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He says part of the problem is that too few people now study classical Greek, Latin or Arabic and there are not enough experts to interpret the original texts.

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On its website, EIHS said it aimed to produce graduates who are fluent in Arabic and able to "confidently and accurately" refer to the original Islamic texts, including the Koran.

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The Russians did not pass these texts on to American officials when they passed the original intelligence about Tsarnaev, the source said.

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