I have pledged - to you, the rating agencies and myself - to always run Berkshire with more than ample cash. We never want to count on the kindness of strangers in order to meet tomorrow's obligations. When forced to choose, I will not trade even a night's sleep for the chance of extra profits.
I don't really think that, as a society, we [americans] want to confer blessings on generation after generation who contribute nothing to society, simply because somebody in the far distant past happened to amass a great sum of wealth.
In a bull market, one must avoid the error of the preening duck that quacks boastfully after a torrential rainstorm, thinking that its paddling skills have caused it to rise in the world. A right-thinking duck would instead compare its position after the downpour to that of the other ducks on the pond.
Having a large amount of leverage is like driving a car with a dagger on the steering wheel pointed at your heart. If you do that, you will be a better driver. There will be fewer accidents but when they happen, they will be fatal.
I would say the most satisfying thing actually is watching my three children each pick up on their own interests and work many more hours per week than most people that have jobs at trying to intelligently give away that money in fields that they particularly care about.