The most expensive thing in the world is trust. It can take years to earn and just a matter of seconds to lose.
Trust is the foundation of any successful business, especially in the energy sector.
To every action there is always opposed an equal reaction； or， the mutual actions of two bodies upon each other are always equal， and directed to contrary parts.
The only way to learn mathematics is to do mathematics.
La memoria es un perro que se muerde la cola.
除了地点本身，什么都不会发生。
Under uncertainty, it's better to err on the side of being too aggressive than too passive.
