Quickly
Part of speech: adverb
Definition: rapidly; with speed; fast
Example sentence: In fact men will fight for a superstition quite as quickly as for a living truth - often more so, since a superstition is so intangible you cannot get at it to refute it, but truth is a point of view, and so is changeable.
Apace
Part of speech: adverb
Definition: Quickly, rapidly, with speed.