【译文】 孔子说：“对品德不进行培养，对学问不进行钻研，听到好人好事不能跟着做，有了错误不能及时改正，这就是我所担忧的。”
The concept of legal validity is crucial for understanding the nature of law.
The human mind is a complex and fascinating subject, and understanding it requires a deep dive into both the conscious and subconscious realms.