expression
time waits for no one
A proverb meaning that time passes relentlessly and does not wait for people; often used to encourage making good use of time.
歳月人を待たず。今すぐ始めよう。
Time waits for no one. Let's start right now.
A classical Chinese-derived proverb (from the Chinese idiom 歳月不待人). The Japanese reading is a literal translation of the Chinese characters.