"You can't directly control where your thoughts drift. If you're controlling them, they're not drifting. But you can control them indirectly, by controlling what situations you let yourself get into. That has been the lesson for me: be careful what you let become critical to you. Try to get yourself into situations where the most urgent problems are ones you want think about."
"The way most fortunes are lost is not through excessive expenditure, but through bad investments. In most people's minds, spending money on luxuries sets off alarms that making investments doesn't."