Warren Buffett: Why stocks beat gold and bonds

I have read a few of his shareholder's letter written in 1978-1982.

The thing about Warren Buffett is that he hasn't changed much since then, just a lot sharper in his thought.

He has written before the same thought in the article above 30 years ago, and he still believes in it.

The principles that he worships are all simple and don't require complex finance knowledge to understand.

The problem with other investors is that they always sway away from these core principles and choose to believe things that're irrational.

I started to understand that investing is not about picking a good stock.
It's about being disciplined and follows your set of principles.