The most important single aspect of software development is to be clear about what you are trying to build.

幸福并不容易。很难在我们内心找到它，更不可能在别处找到它。

The healthy social life is found when in the mirror of each human soul the whole community finds its reflection, and when in the community the virtue of each one is living.

我应该，所以我能够。

In machine learning, the trade-off between bias and variance is crucial for achieving good generalization.