Bane is highly intelligent; in Bane of the Demon, Ra's al Ghul says that Bane "has a mind equal to the greatest he has known" (although he dismisses Bane's intellect as the cunning of an animal rather than the cultured, trained intellect of Batman). His strength gives him more ways to go against Batman. Bane has shown to be capable of lifting 15 tons.[12] In prison, he taught himself various scientific disciplines equal to the level of understanding of leading experts in those fields.[4] He knows ten active languages and at least four additional arcane and dead ones. Among these are Spanish, English, French, German, Russian, Mandarin, Farsi, Dari, Urdu, and Latin.[12][52] The Bane of the Demon storyline reveals that he has an eidetic memory. Within one year, he is able to deduce Batman's secret identity.[12]He is also highly devious and a superb strategist and tactician.[4] In prison, Bane also invented his own form of calisthenics, meditation, and a fighting style that he uses against other well-known martial arts fighters within the DC Universe