expression
when you want to be filial, your parents are already gone
Proverb expressing regret that by the time one truly wishes to repay one's parents, they may have passed away. Often used to encourage filial piety while parents are still alive.
「孝行のしたい時分に親はなし」と言うから、今のうちに親孝行をしておきなさい。
They say, 'When you want to be filial, your parents are already gone,' so be good to your parents while you can.
A traditional Japanese proverb. The exact origin is uncertain, but it reflects a common sentiment about filial piety.