A mathematician's intuition is as important as rigorous proof.
數(shù)學(xué)家的直覺和嚴(yán)謹(jǐn)?shù)淖C明同樣重要。
Sustainability is not an option; it's a necessity for the future of agriculture and food production.
To love is to see the invisible and to believe in the impossible.
釋文：不了解事情的真相就高談闊論，便是不明智；如果知道了而不談，就 是不忠誠。
Sustainability in agriculture isn't an option—it's a necessity for survival.