运气不好时金子可能变成铁，运气到来时铁也可能变成金。
The best investment you can make is in yourself.
A miner's skill and dedication are just as valuable as the coal they bring to the surface.
"Prime numbers are what is left when you have taken all the patterns away. 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."
诗歌应当像利剑一样锋利。