"Mountains will go into labour, and a silly little mouse will be born"

This quote by Horace is a metaphor for the idea that something small and unimportant can have a great impact. The expression "mountains will go into labour" is a recommendation to the problem and effort that is required to bring something new into the world. The "ridiculous little mouse" is a symbol of something small and apparently irrelevant, but which can have a terrific impact. This quote is a tip that even the tiniest of things can have a terrific impact, and that we ought to not undervalue the power of the small and unimportant. It is also a tip that great things can originate from the most not likely of locations. The quote is a reminder to never undervalue the power of the little and irrelevant, and to constantly be open to the possibility of something fantastic originating from something little.