经济学的研究最终是对人类行为及其后果的研究。
The study of economics is ultimately the study of human behavior and its consequences.
Every challenge in mining is an opportunity to redefine our future.
I'm not a feminist, but I do believe in the power of women.
The elements of consciousness are to be isolated by experimental procedures.
Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible.