Louis Gustave Vapereau was a French writer and lexicographer famous primarily for his dictionaries, the "Dictionnaire universel des contemporains" and the "Dictionnaire universel des litterateurs". Born in Orléans, he studied philosophy at the "École Normale Supérieure" from 1838 to 1843, writing his thesis on Pascal's "Pensées" under the supervision of Victor Cousin. Wikipedia
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