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Energy security is national security.

La solitude est bonne aux grandes ames et aux méchants.

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

The cognitive map is not a picture or a model in the head, but a dynamic, changing representation of the environment.

寫作是一種記憶的形式。

I have to be alone very often. I'd be quite happy if I spent from Saturday night until Monday morning alone in my apartment. That is how I refuel.