The concept of computational efficiency is central to the design of learning algorithms.

In modern life nothing produces such an effect as a good platitude. It makes the whole worldkin.

Un libro es siempre una puerta abierta a otro mundo.

The only way to discover the limits of the possible is to go beyond them into the impossible.

过去隐藏在我们无法察觉的某个物质对象中（在那个物质对象会给我们带来的感觉中），在理智无法触及的领域之外。