The key to successful identification is to find a model structure that is flexible enough to capture the essential features of the system, yet simple enough to be estimated from the available data.
成功辨识的关键是找到一个足够灵活的模型结构，以捕捉系统的基本特征，同时又足够简单，可以从现有数据中估计出来。
哲学在成功时是装饰品，在失意时是避难所，在年老时是供应品。
The study of psychology is the study of adaptive success.
Resilience is built through challenges, not comfort.