真正的问题不是为什么有些人懒惰，而是为什么有些人在几乎必然导致懒惰的条件下却不懒惰。
柴油发动机是当今已知效率最高的原动机。
始终保持交易的书面记录。这将帮助你从错误和成功中学习。
Innovation happens when technology meets real needs.
Where there is love, there is life.
The relationship between wages and employment is not as straightforward as some models suggest.
The transformation of the coal industry requires both determination and patience.
Your most unhappy customers are your greatest source of learning.
We must balance the need for energy with the responsibility to protect our planet.
Probability theory is nothing but common sense reduced to calculation.
La literatura es una forma de resistencia, una manera de decir que no todo está perdido.