Never invest in a business you don't understand.
Money is not everything. Make sure you earn a lot before speaking such nonsense.
If book knowledge made great investors, than the librarians would all be rich.
It irritates the hell out of me but you can't buy love.
A lot of great fortunes in the world have been made by owning a single wonderful business. If you understand the business, you don't need to own very many of them.
A public-opinion poll is no substitute for thought.