Time is to be treasured, not marked.
Quotes to consider:
“Don’t count every hour in the day, make every hour in the day count.” – Unknown
“Time is free, but it’s priceless. You can’t own it, but you can use it. You can’t keep it, but you can spend it. Once you’ve lost it you can never get it back.” – Harvey MacKay
“The only reason for time is so that everything doesn’t happen at once.” – Albert Einstein