Sustainability is not an option; it's a necessity for the future of agriculture and food production.
可持續(xù)性不是一種選擇；它是農(nóng)業(yè)和食品生產(chǎn)未來(lái)的必需品。
數(shù)學(xué)的本質(zhì)在于它的自由。
The greatest threat to democracy is not from external enemies but from internal decay and the loss of civic virtue.
Leadership means listening more than you speak, and acting with purpose.
進(jìn)化是世界上最美麗的事情。