Voltaire tried to blind himself, while he really enjoyed the conversation and friendship of Frederic, and while the cloven foot of despotism remained in shadow. Among other modes of civilising Prussia and spreading the blessings of knowledge, Frederic had established an academy. This was a favourite creation, and it did him honour. The president was Maupertuis, a man of some ability, but whose talents were vitiated by the taint of envy. He had considered himself the first _bel esprit_ at court till Voltaire appeared. He and the poet had corresponded heretofore, and Voltaire had not spared flattery in his letters; but he neglected to mention Maupertuis's name in his speech when he took his seat in the French academy. This was not an injury to be forgiven; and though Voltaire paid him every sort of attention, the other could ill brook his superior favour, especially as Frederic, who had never relished his conversation, frequently excluded him from the royal suppers, and joined with Voltaire in making him the object of their endless pleasantries. At first Voltaire only jested, because he was a wit and could not help it; but Maupertuis contrived to rouse a more bitter spirit. He had discovered a new principle in mechanics, that of the _least power_: this principle met much opposition, and Kœnig, a Prussian mathematician, not only argued against it, but quoted a fragment of a letter of Leibnitz, in which this principle was mentioned and objected to. Kœnig confessed that he possessed only a copy of the letter in question, acknowledging that the original was lost. Maupertuis took advantage of this circumstance; he induced the academy, of which he was president, to summon Kœnig to produce the original; and when this was allowed not to be found, he proceeded to accuse him of forgery. He got up a meeting of such academicians as he could influence, by whom Kœnig was declared unworthy to be any longer a member, and his name erased from the list.