Risk comes from not knowing what you are doing so wide diversification is only required when investors are ignorant. You only have to do a very few things in your life so long as you don't do too many things wrong.
Warren BuffettWhen a management with reputation for brilliance gets hooked up with a business with a reputation for bad economics, it's the reputation of the business that remains intact.
Warren BuffettThe active investors will have their returns diminished by a far greater percentage than will their inactive brethren. That means that the passive group - the "know-nothings" - must win.
Warren BuffettSomeone's sitting in the shade today because someone planted a tree a long time ago. The person sitting in the shade now should be grateful for the person who planted and tended that tree. That includes all those benefactors of humanity throughout history that created, invented, financed, produced, maintained and improved all that we enjoy today.
Warren Buffett