The promises of yesterday are the taxes of today. – William Lyon MacKenzie
Promises are like the full moon, if they are not kept at once they diminish day by day. – German Proverb
One must have a good memory to be able to keep the promises that one makes. – Friedrich Nietzsche
Better break your word than do worse in keeping it. – Thomas Fuller
Some persons make promises for the pleasure of breaking them. – William Hazlitt
The promise given was a necessity of the past: the word broken is a necessity of the present. – Niccolò Machiavelli
Hypocrisy can afford to be magnificent in its promises, for never intending to go beyond promise, it costs nothing. – Edmund Burke
Oaths are the fossils of piety. – George Santayana
Promises make debt, and debt makes promises. – Dutch Proverb
A promise is a comfort for a fool. – Proverb
He was ever precise in promise-keeping. – William Shakespeare
When a man repeats a promise again and again, he means to fail you. – Proverb
I thought he was a young man of promise; but it appears he was a young man of promises. – Author Unknown
As a human being, the best eulogy I can reasonably hope for is “He made his promises sincerely and broke them regretfully.” – Robert Brault, rbrault.blogspot.com
It is useless to hold a person to anything he says while he is in love, drunk, or running for office. – Shirley MacLaine
Promise little and do much. – Hebrew Proverb
Promise only what you can deliver. Then deliver more than you promise. – Author Unknown
The man who promises everything is sure to fulfill nothing, and everyone who promises too much is in danger of using evil means in order to carry out his promises, and is already on the road to perdition. – Carl Jung
A prince never lacks legitimate reasons to break his promise. – Niccolò Machiavelli
Nothing is as easy to make as a promise this winter to do something next summer; this is how commencement speakers are caught. – Sydney J. Harris