生命中最伟大的荣耀不在于从未跌倒,而在于每次跌倒后都能站起来。
The greatest glory in living lies not in never falling, but in rising every time we fall.
In mathematics, the art of proposing a question must be held of higher value than solving it.
真正的民主只能存在于社会主义社会中。
动力学的方程在用变分法的语言表达时是完全的。
The human figure is the most direct way to engage with political and social issues.