He was happy to teach any one who wanted to be taught and quickly people were lining up to see him.

他乐于教那些想学习的人，很快人们都很想见到他。

youdao

As for your question: It's useful to think about two aspects of your job choices: What will make you happy (which is the only aspect people usually consider) and what jobs will be able to teach you something important.

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