3 Illiger may be considered the founder of the school of nomenclatural purists.
He was so often accused by political purists for associating politically with men of discredited reputation that his own picturesque statement of his conversion to a belief that in legislative or administrative politics one must work with all sorts and conditions of men is illuminating.
Many lizards, however, retain the eggs in the oviducts until the embryo is fully developed; these species then bring forth living young and are called ovo-viviparous by purists.
Caveats were mentioned by the dance purists.
For the Advent purists this is of course anathema.