Warren Buffett says

“For Buffett, managers are stewards of shareholder capital. The best managers think like owners in making business decisions.”

More on this...

“We both insist on a lot of time being available almost every day to just sit and think. That is very uncommon in American business. We read and think. So Warren and I do more reading and thinking and less doing than most people in business.”

“It’s not possible for investors to consistently outperform the market. Therefore you’re best served investing in a diversified portfolio of low-cost index funds [or exchange-traded funds].”

“what’s good for customers is good for shareholders.”

“Any business plan won’t survive its first encounter with reality. The reality will always be different. It will never be the plan.”