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1·Science is a wonderful thing if one does not have to earn one's living at it.

科学是好东西，只要它不跟任何人的饭碗挂钩就行。

2·Science is a wonderful thing if one does not have to earn one's living at it.

没有生活保障的科学何乐之有。这是爱因斯坦说过的一句话。

3·Science eis a wonderful thing if one does not have to earn one's living at it.

科学是好东西，只要它不跟任何人的饭碗挂钩就行。

4·But when it is forced from the outside and one takes it as a profession, because one has to live and one has to learn and earn one's living, one takes it over.

但是如果是从外部强迫的，那么那个人就会把它当做是一个职业，因为他必须生存，必须挣钱维持生计，一切都结束了。