From Dad:
(Roughly translated and greatly condensed.)
There are two ways to get wealthy fast. Marry a rich widow or rob a bank. I suggest you marry a rich widow.
You read too much, reading doesn't get you anywhere.
If you want to know something, the best way to find out is to keep your mouth shut and your eyes open. Try to figure it out before you ask. (I think this is a variation on, "Better to keep your mouth shut and be thought a fool than to open it and remove all doubt.")
From Mom:
Don't invest in stocks, invest in bonds.
From my brother:
I'm not going to tell you there are more fish in the pond. That's ---That which is odiferous and causeth plants to grow---. I'm just going to tell you that I know it hurts and to just hang in there.