Gabriel Nuchelmans found a similarity between this thinker’s work and the Stoic concept of lekta, a plagiarism accusation reiterated by Susan Bobzien. This man and a British thinker bickered in letters over whether the snowfields of Mont Blanc are a component part of the sentence “Mont Blanc is over 4,000 meters high.” Two categories created by this thinker were replaced with “content” and “character” in the theory of David Kaplan. George Boolos named a concept that replaces this man’s (*) Basic Law V in a theorem (10[1])rediscovered by Crispin Wright, which proves that the Peano axioms could be derived in second-order logic. This philosopher argued that the “mode of presentation” was different when people referred to the morning star and evening star. For 10 points, name this German logician who wrote “Sense and Reference.” ■END■ (0[1])