1.suddenly an idea occurred to him. it was such a good idea that it was only by the exercise of all his self-control that he prevented himself from jumping out of bed and carrying it out at once.
문장 구조분석 부탁드려요.

2. there is this difference between man and the lower animals, that what man does he has to learn how to do, while animals are able to do the most that they accomplish by what we call instinct: that is, without having to learn how.
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