译文：凡事从自身上找原因，就不会有抱怨了。这就是孟子说的行有不得反求诸己。

音乐有力量振奋人心、带来安慰并激励改变。

To one who has faith, no explanation is necessary. To one without faith, no explanation is possible.

The ability to focus attention is crucial for learning, memory, and performance in complex tasks.

Do not weep; do not wax indignant. Understand.