The food issue is not only an economic issue, but also a political one, related to the long-term stability of the country.
The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
艺术应该是危险的——不是身体上的危险，而是对思想的危险。
If you are under the impression you have already perfected yourself， you will never rise to the heights you are no doubt capable of.
We may encounter many defeats but we must not be defeated.
