Who said "A promise made is a debt incurred."?

This quote is attributed to Edmond Dantès.

A promise made is a debt incurred. - Edmond Dantès

"A promise made is a debt incurred."

Edmond Dantès

Character in The Count of Monte Cristo

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"The whole of the secret lies in this."

"Wait and hope."

"Life is a storm, my young friend. You will bask in the sun one moment, be shattered on the rocks the next."

"There is neither happiness nor misery in the world; there is only the comparison of one state with another."