You cannot love more than you do, but you can be more courteous when showing it!

You know, I was very courteous while you were speaking.

When you smile, you don't only appear to be more likable and courteous, you appear to be more competent.

be patient, dignified and courteous.

We must be courteous to a man as we are to a picture, which we are willing to give the advantage of a good light

We were shocked and saddened to hear this. He was such a courteous and polite boy. Everyone wanted to be his friend.