Thinking is the hardest work there is, which is probably the reason why so few engage in it.
思考是最艰难的工作，这可能是为什么如此少的人从事它。
The best ore deposits are found where others stopped looking.
"El verdadero escritor no tiene biografía, su biografía son sus libros."
"The success of machine learning depends on the ability to balance the trade-off between bias and variance in the models we build."