幸福不是现成品,它来自你自己的行动。
"Happiness is not something ready made. It comes from your own actions."
Every life contains its own mysteries, and the biographer must respect the unknowable.
Mathematics is a living subject, constantly evolving with new ideas and discoveries.
"The value of a man should be seen in what he gives and not in what he is able to receive."
To eat bread without hope is still slowly to starve to death.
Education is the key to unlock the golden door of freedom.