Really outstanding investment opportunities are rare enough that you should really have a go at it when it comes around, and put a huge portion of your wealth into it. I’ve said in the past you should think of investment as though you have a punch card with 20 holes in it. You have to think really hard about each one, and in fact 20 (in a lifetime) is way more than you need to do extremely well as an investor.6 —Warren Buffett
