经济学家的角色既是科学家,又是工程师。
Sometimes the most profound mathematics comes from playing with simple ideas until they reveal their hidden complexity.
Collaboration across the supply chain is key to driving real change.
魔法,如同任何其他力量,本身既非善也非恶。决定其性质的是它所服务的目的。
The only thing that will redeem mankind is cooperation.