If virtue promises happiness, prosperity and peace, then progress in virtue is progress in each of these for to whatever point the perfection of anything brings us, progress is always an approach toward it.
Epictetus

The promises of this world are, for the most part, vain phantoms; and to confide in one's self, and become something of worth and value is the best and safest course.
Michelangelo

It makes my heart sick when I remember all the good words and the broken promises.
Chief Joseph

For anything worth having one must pay the price; and the price is always work, patience, love, self-sacrifice - no paper currency, no promises to pay, but the gold of real service.
John Burroughs

But I have promises to keep, and miles to go before I sleep, and miles to go before I sleep.
Robert Frost