> Utile erit scribit ∫ pro omnia.
> (It is useful to write ∫ instead of omnia)
> – Leibniz (1675-10-29)

(Source for this quotiation: Eriksson, Estep, Hansbo, Johnson: Computational differential equations, end of Ch. 3)

In response to some comments: _omnis_ [means “all”](http://www.archives.nd.edu/cgi-bin/lookup.pl?stem=omnis&ending=). Compare _omnivore_. Here endeth the Latin lesson.