The financial calculus that Charlie and I employ would never permit our trading a good night's sleep for a shot at a few extra percentage points of return. I've never believed in risking what my friends and family have and need in order to pursue what they don't have and don't need.
Warren BuffettBuy a cross section of American industry, and if a cross section of American industry doesn't work, certainly trying to pick the little beauties here and there isn't going to work either.
Warren BuffettWhat you really want to do in investments is figure out what's important and knowable. If it's unimportant or unknowable you forget about it.
Warren Buffett