The concept of progress must be grounded in the idea of catastrophe.
Sustainability isn't a choice—it's a responsibility we owe to future generations.
问题的数学表述通常比其解决方案更重要,后者可能仅仅是数学或实验技巧的问题。
The best fertilizer is the farmer's shadow in the field.
The challenge of our time is to build an economy that works for everyone, not just the privileged few.
Mental life is a continuous adjustment to internal and external demands.