I think prime numbers are like life. They are very logical but you could never work out the rules, even if you spent all your time thinking about them.

穷人往往比富人更具创业精神，但他们缺乏成功的工具。

Adaptability is the key to survival in a rapidly changing industry.

Success is not an accident; it’s the result of habits.

清洁：身体、衣服及住所，力求整洁。