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.
In the state of nature, indeed, all men are born equal, but they cannot continue in this equality. Society makes them lose it, and they recover it only by the protection of the laws.
學(xué)習(xí)的速度決定成長的速度。
Collaboration across borders is key to solving global food challenges.
The hardest thing to explain is the glaringly evident which everybody had decided not to see.