数学家的工作大多是孤独的追求，但它建立在许多其他人的工作之上。
A mathematician's work is mostly a solitary pursuit, but it builds on the work of many others.
The future competition is the competition of data.
The best investment you can make is in yourself.
To each appearance， as it arises， we should oppose the equal appearance.
If the job has been correctly done when a common stock is purchased, the time to sell it is—almost never.