子曰：“吾尝终日不食，终夜不寝，以思。无益，不如学也。”
孔子说：“我曾整天不吃、整夜不睡，来思考。结果没好处，还不如学习。”
Learning is the process of modifying symbolic structures to improve performance.
I don't act to escape reality, I act to understand it.
比喻做事要专心致志，不能一心二用。