Be pitiful, be courteous. [ Bible ]

An affable and courteous gentleman. . [ William Shakespeare ]

Her air, her manners, all who saw admired;
Courteous though coy, gentle though retired. [ Crabbe ]

He that owes nothing, if he makes not mouths at us, is courteous. [ English Proverb, collected by George Herbert ]

Govern the lips as they were palace doors, the king within;
Tranquil and fair and courteous be all words which from that presence win. [ Sir Edwin Arnold ]

Vanity bids all her sons be brave, and all her daughters chaste and courteous. [ Sterne ]

A wise man in his house should find a wife gentle and courteous, or no wife at all. [ Euripides ]

We must be as courteous to a man as we are to a picture, which we are willing to give the advantage of a good light. [ Ralph Waldo Emerson ]

Do not worry; eat three square meals a day; say your prayers; be courteous to your creditors; keep your digestion good ; exercise ; go slow and easy. Maybe there are other things that your special case requires to make you happy, but, my friend, these, I reckon, will give you a good lift. [ Abraham Lincoln ]