数学中最深刻的问题往往源于最简单的问题。
The deepest problems in mathematics often arise from the simplest questions.
Emotional decision-making is the enemy of successful investing.
人为某样东西实际支付的成本至少是标价的两倍，因为买来后设置、学习、维护、修理，以及最后处置，也需要耗费精力、时间和钱。不是所有的实际成本都在价签上。实际成本是标价的2倍。
Make up your mind to act decidedly and take the consequences. No good is ever done in this world by hesitation.
Oil and gas will remain part of the energy mix for decades to come, but we must produce them as cleanly as possible.
