meaning

Hi
Please help me with this:

These are the words of Humphrey Bogart, in the film Casablanca, to his once lover while she thinks that she could live with him despite the fact she is married and needs to go with her husband.

RICK: “Ilsa, I'm no good at being noble, but it doesn't take much to see that the problems of three little people don't amount to a hill of beans in this crazy world. Someday you'll understand that.


My guess:
He says that, though he is not noble, he can at least think in the interest of all of their lives and say it was better that they put their pains of being away from each other behind and move on for one day they will realize that it was of matter of no significance in the world which is preoccupied with craze for power possessions and so on.