Some lessons become powerful because somebody finally gives language to what you already sensed.

There are things you half know for years without being able to say them, and they stay unusable in that state. When someone finally supplies the words, nothing is added except precision, and precision is what allows you to think about it, act on it, and tell someone else. Naming turns a vague sense into something you can work with.

When something someone says lands hard, write down the exact phrasing. That language is the useful part. Keep it where you will meet it again.