Ambiguous Quote by Carl Friedrich Gauss
“Sin 2 φ is odious to me, even though Laplace made use of it; should it be feared that sin 2 φ might become ambiguous, which would perhaps never occur, or at most very rarely when speaking of sin(φ 2 ), well then, let us write (sin φ) 2 , but not sin 2 φ, which by analogy should signify sin (sin φ)”