Efficiency in energy production is the cornerstone of sustainable development.
To live is the rarest thing in the world. Most people exist, that is all.
世界是一本书，不旅行的人只读了一页。
勇敢地与众不同。
Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.
The stock market is a device for transferring money from the impatient to the patient.