Live and learn spoken cliché
It is usually used when one is surprised to learn something.
Learn or discover something new and surprising from one's experience or mistakes.
I didn't read the recipe, so my new dish was a disaster. Oh well, live and learn!
I wouldn't know how interesting skating is if I didn't try - live and learn!
The phrase originates from the second half of the 1500s.
To be cautious; to plan ahead instead of taking a risk
I like to err on the side of caution and always keep some money in my savings account.