Anyone can be rich in promises. Ovid
Enemies' promises were made to be broken. Aesop
Some persons make promises for the pleasure of breaking them. William Hazlitt
God promises a safe landing but not a calm passage. Bulgarian Proverb
Evening promises are like butter: morning comes, and it's all melted. Moroccan Proverb
If Nakedness promises you a piece of cloth, ask him his name. Sudanese Proverb