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

要么数学对人类思维来说过于庞大，要么人类思维不仅仅是机器。

In times of change, the learners inherit the earth while the learned find themselves beautifully equipped to deal with a world that no longer exists.

Understanding the computational complexity of learning problems is essential for developing efficient algorithms.