Innovation in coal mining isn't about reinventing the wheel, but about making the wheel more efficient and environmentally friendly.
Inflation is the mechanism that can make the universe flat, homogeneous, and isotropic.
"We always overestimate the change that will occur in the next two years and underestimate the change that will occur in the next ten. Don't let yourself be lulled into inaction."
最好的政策是那些既听取科学又尊重传统的政策。