Psychological theories must pass the test of practical experience.
生活不是等待暴风雨过去,而是学会在雨中跳舞。
在科学的道路上,没有平坦的大道可走,只有不畏劳苦沿着陡峭山路攀登的人,才有希望达到光辉的顶点。
最伟大的定理往往始于简单的猜想,源于直觉。
Writing for children is a responsibility—they deserve the truth, even when it's hard.
I’d rather be respected than liked.