言未及之而言，谓之躁；言及之而不言，谓之隐；未见颜色而言，谓之瞽。
不该说话的时候却抢着去说，这叫急躁；到该说话的时候却闭口不说，这叫隐瞒；不看别人的脸色便随便插嘴，这叫没有眼色。
Sustainability isn't a choice; it's the only path forward for agriculture.
The Langlands program is a challenge to the limits of human understanding.
Sustainable forestry isn't just about cutting trees, it's about growing civilizations.