Learn something new every day

Generated image of a child learning from books
Learn something new every day is a phrase people say when they discover to their surprise a new thing they did not know before.

The saying reflects a long-standing belief that learning never really stops. Variations of the phrase have appeared in English for many years as a casual way to react to new information.

When he found out that octopuses have three hearts, he laughed and said you learn something new every day.