音乐行业是残酷的，你必须为此做好准备。

The world is everything that is the case.

The human being cannot live in a condition of emptiness for very long: if he is not growing toward something, he does not merely stagnate; the pent-up potentialities turn into morbidity and despair, and eventually into destructive activities.

对心灵的研究就是对生活应对机制的研究。

教学的全部艺术，不过是唤醒年轻人天生的好奇心，以便日后满足它。