"In the long run, the only sustainable source of competitive advantage is your ability to learn faster than your competition."

短期利益永远不应损害长期可持续性。

The only truly secure system is one that is powered off, cast in a block of concrete and sealed in a lead-lined room with armed guards - and even then I have my doubts.

The investor's chief problem - and even his worst enemy - is likely to be himself.