In an age when many gentlemen and ladies could not sign their names, Bothwell wrote, and wrote French, in a firm, yet delicate Italic hand, of singular grace and clearness.[11] His enemies accused him of studying none but books of Art Magic in his youth, and he may have shared the taste of the great contemporary mathematician, Napier of Merchistoun, the inventor of Logarithms. Both Mary’s friends and enemies, including the hostile Lords in their proclamations, averred that Bothwell had won her favour by unlawful means, philtres, witchcraft, or what we call Hypnotism. Such beliefs were universal: Ruthven, in his account of Riccio’s murder, tells us that he gave Mary a ring, as an antidote to poison (not that _he_ believed in it), and that both she and Moray took him for a sorcerer. On a charge of sorcery did Moray later burn the Lyon Herald, Sir William Stewart, probably basing the accusation on a letter in which Sir William confessed to having consulted a prophet, perhaps Napier of Merchistoun, the father, not the inventor of Logarithms.[12] Quite possibly Bothwell may really have studied the Black Art in Cornelius Agrippa and similar authors. In any case it is plain that, as regards culture, the author of _Les Affaires du Conte de Boduel_, the man familiar with the Court of France, where he had held command in the Scots Guards, and had probably known Ronsard and Brantôme, must have been a _rara avis_ of culture among the nobles at Holyrood. So far, then, Mary’s love for him, if love she entertained, was the reverse of ‘incredible.’ It did not need to be explained by a common possession of ‘extreme vices.’ The author, as usual, overstates his case, and proves too much: Lesley admits that Bothwell was handsome, an opinion emphatically contradicted by Brantôme. Bothwell had the charm of recklessness to an unexampled degree. He was fierce, passionate, unyielding, strong, and, in the darkest of Mary’s days, had been loyal. He had won for her what Knollys tells us that she most prized, victory. A greater contrast could not be to the false fleeting Darnley, the bully with ‘a heart of wax.’ In him Mary had more than enough of bloom and youthful graces: she could master him, and she longed for a master. If then she loved Bothwell, her love, however wicked, was not unnatural or incredible. He had been loved by many women, and had ruined all of them.