真相很少是纯粹的，也从不简单。
"The truth is rarely pure and never simple."
"Memory is a complicated thing, a relative to truth, but not its twin."
It is wrong to have an ideal view of the world. That's where the mischief starts. That's where everything starts unravelling.
Mathematics teaches us to think logically and to approach problems systematically.
食物的真正成本不仅是你商店里支付的，更是地球长期付出的代价。