What must go on, per an adage Crossword Clue

 The answer to the crossword clue "What must go on, per an adage" is life.

The adage in question is "Life must go on." This is a truism that means that life continues, regardless of the challenges and obstacles that we face. It is a reminder that we should not give up, even when things are tough.

The word "adage" can also refer to a proverb or a saying. Proverbs are short, wise sayings that have been passed down through generations. They often offer advice or wisdom about life.

In the context of the crossword clue, the answer "life" is a pun. The word "life" can mean both the living organism and the activities and experiences of that organism. In this case, the meaning of "life" is the latter. The adage is saying that the activities and experiences of life must continue, even when things are difficult.

I hope this helps! Let me know if you have any other questions.