Again, Be careful to make a good improvement of precious time.

Oh, how precious is time, and how it pains me to see it slide away, while I do so little to any good purpose

Oh, how precious is time, and how it pains me to see it slide away, while I do so little to any good purpose.

I don't have to be careful, I've got a gun.

Time lost cannot be regained, therefore one should spend every second wisely.

Be prepared, and be careful not to do your good deeds when there's no one watching you.