They cover from study attitude to your behavior. I think people should learn deep Confucius' thoughts.

我认为人们都应该深入学习孔子的思想。

youdao

Well, do you think people can tell you their real thoughts just through phone?Without person-to-person contact, it is unlikely for you to dig deep into their minds and unlikely to get truth.

考生听到第一句话时，从语言的反问语气可以判断发言者的观点是不支持的——“你认为人们会通过电话告诉你真实的想法吗？”

youdao

And as anyone in management knows, you can go far without having to think deep thoughts, especially about yourself.

FORBES: Nucky Thompson: Know Yourself Before You Can Get What You Want