Pictorial Quotes (2 quotes)
If texts are unified by a central logic of argument, then their pictorial illustrations are integral to the ensemble, not pretty little trifles included only for aesthetic or commercial value. Primates are visual animals, and (particularly in science) illustration has a language and set of conventions all its own.
Mathematics is often considered a difficult and mysterious science, because of the numerous symbols which it employs. Of course, nothing is more incomprehensible than a symbolism which we do not understand. But this is not because they are difficult in themselves. On the contrary they have invariably been introduced to make things easy. [T]he symbolism is invariably an immense simplification. It represents an analysis of the ideas of the subject and an almost pictorial representation of their relations to each other.