2. Zhuangzi: Life is limited and knowledge is limited;
3. Charles Munger: Graduated from Harvard Law School. After Harvard was rejected by business school, he became a self-taught investment tycoon.
4. Lev Nikolayevich Tolstoy: Russian writer and thinker, who struggled for literature all his life;
5. stephen william hawking: Hawking suffered from amyotrophic lateral sclerosis at the age of 2 1 and was re-elected as Lucas Professor of Mathematics. His main research fields are cosmology and black holes. He proved the singularity theorem and black hole area theorem of general relativity, and put forward the black hole evaporation theory and the borderless Hawking universe model.