When a man repeats a promise again and again, he means to fail you

A promise must never be broken

Everyone is a millionaire where promises are concerned

In the midst of great joy do not promise to give a man anything; in the midst of great anger do not answer a man's letter

You can make any promises as long as you are not going to be there to fulfill them.

Promises are like the full moon, if they are not kept at once they diminish day by day