We're having a friendly debate on the meaning of this proverb being based on military vs life origins. It is defined as preparation leads to victory (as in achieve your goal vs military victory). (“Victory loves the care”, that is “Victory likes careful preparation” or more loosely “Victory favours those who take pains”)
Thank you
It's a quote from Catullus 62, see here for a translation (edit: better translation).
Apparently the groomsmen and bridesmaids are singing marriage songs as the bride is introduced, responding back and forth to each other in something that Catullus frames as a competition. But whereas the bridesmaids have prepared their song beforehand (aspicite, innuptae secum ut meditata requirunt : "watch, how the unmarried women are recalling what they had deviced"), the groomsmen are just ad-libbing it (because men have better things to do than to care about marriages...) and accept their impending defeat.
But of course the entire lament is facetious, Catullus can easily out-poet whatever the women - penitus quae tota mente laborant : "who are engaged completely with their entire mind" - have invested so much effort in and is making a show of it.
Seeing that this quote is used in real-life military contexts is kinda gross.