Don't make excuses and Don't talk about it. Do it.

Your word is your bond.

Talk to him of Jacob's ladder, and he would ask the number of the steps.

Then why did you ask me?' it screamed.
'I just wanted something to talk to,' said Marvin.

He didn't seem to realize that three excuses was as good as no excuse.

Never make excuses. Your friends don't need them and your foes won't believe them.