I heard this on the podcast, On Being, this morning.
Men marry women thinking they [women] will stay the same.
Women marry men thinking they [men] will change.
Your quote reminded me of three quotes from Mark Twain.
1. If you pick up a starving dog and make him prosperous, he will not bite you. This is the principal difference between a dog and a man.
2.The dog is a gentleman; I hope to go to his heaven, not man's.
3. The more I learn about people the more I like my dog.