Warren Buffett says

“Buy a stock the way you would buy a house. Understand and like it such that you’d be content to own it in the absence of any market.”

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“If you’re long-term oriented, customer interests and shareholder interests are aligned.”

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

“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].”