"Randomized experiments are the gold standard for causal inference, but they are not always feasible."
"I'm like a kid. I never think about the consequences."
Sustainability is not an option; it's a responsibility we owe to future generations.
The human being is a sun, and the senses are his planets.
建筑的强度不仅在于其材料,还在于使用它的人的精神。