As lovely as that statement is let's remember she was born to a prosperous family and marry into another one. She was also born W.A.S.P. in 1925 that alone would be a good start in life unlike those ethnic Italians, Irish, Polish, Jews, etc. Is very easy to make that statement if you never have to worry about money nor suffer segregation or negative stereotypes from birth that no matter how you behave in your life you just can't get away from them.
One more thing she lived through the depression as a child, I don't know how her family did during that time but some families with money went bankrupt during those days.