英语翻译没有什么比健康更快乐的了,虽然他们在生病之前并不曾觉得那是最大的快乐.----Plato

noting was happier for them than a healthy ,though they had not realized that before they were ill.
其实这种名人的原句是不好再翻译的，因为本来这就是经过汉化的。还是找到原著吧。希望能给你一点提示！

Nothing is more healthy and happy, though they are sick and had never before thought that was the great joy. — Plato

Not any compared to health more joyful,although before they in falls ill not once thought that was the biggest joy .原文