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"In every civilized country there are now hundreds of producing mathematicians, each commanding only a quite small corner of his science, whose importance seems to him, naturally, to surpass all others. He publishes the fruit of his labor in disjointed, individual articles in various widely dispersed journals, in various languages. The exposition, intended for a few specialist colleagues, refrains from indicating any connection with more general questions. Hence it is barely accessible to colleagues in neighboring fields and totally inaccessible to a larger circle."

Felix Klein: "Development of Mathematics in the 19th Century"; Math Sci Press, Boston 1979, page 4;
Translation of `Vorlesungen über die Entwicklung der Mathematik im 19. Jahrhundert, Teil 1' (Springer, Berlin 1926) by M. Ackerman