Shelley: What you can do because you are weak is even weaker if you regret it after doing it.
Liu Ming Yuan Qing: It's a great honor. You can't regret what you have done.
English proverb: Repentance is the first step to regret.
Toto fuller: honest people will never regret their honesty.
Labruyere: When we lament the youth that is gone forever, we should consider the aging in the future and don't regret not cherishing the prime of life at that time.
French proverb: Don't wait until the days have passed before you discover your loveliness.
Beethoven: Nothing is more precious than time, so never put off today until tomorrow.