 They made Leibniz somewhat respectable among 20th-century analytical and linguistic philosophers in the English-speaking world (Leibniz had already been of great influence to many Germans such as Bernhard Riemann).For example, Leibniz's phrase "salva veritate", meaning interchangeability without loss of or compromising the truth, recurs in Willard Quine's writings.Nevertheless, the secondary literature on Leibniz did not really blossom until after World War II.