Mabel Custorio's Key Ideas from The Richest Man in Babylon (English)
by George S Clason

A fat purse quickly empties if there be no golden stream to refill it.

I wish an income that will keep flowing into my purse whether I sit upon the wall or travel to far lands.

"It costs nothing to ask wise advice from a good friend and Arkad was always that. Never mind though our purses be as empty as the falcon's nest of a year ago. Let that not detain us. We are weary of being without gold in the midst of plenty. We wish to become men of means."

...the reason why we have never found any measure of wealth. We never sought it.

"If you have not acquired more than a bare existence in the years since we were youths, it is because you either have failed to learn the laws that govern the building of wealth, or else you do not observe them."

I decided that if I was to achieve what I desired, time and study would be required.

"As for time, all men have it in abundance. You, each of you, have let slip by sufficient time to have made yourselves wealthy. Yet, you admit, you have nothing to show except your good families, of which you can be justly proud."

"As for study, did not our wise teacher teach us that learning was of two kinds: the one kind being the things we learned and knew, and the other being the training that taught us how to find out what we did not know?"