始终对新可能性保持开放的心态。
Do not let yourself be tainted with a barren skepticism.
数学不是一项观赏性运动。
Natural experiments are a powerful tool for understanding causal relationships in the real world.
文字有重量，作家必须承担这种重量的责任。
The best designs are those that solve problems people didn't even know they had.