You would also think I had learned the lesson long ago.

And actually I learned the lesson a long time ago.

To do either would be to have learned the wrong lesson, indeed.

We must also at any rate learn the political lesson.

If so, we will have learned an important economic lesson.

I think we all can learn a great lesson from him.

Years later we would learn a hard lesson about social change.

She wasn't the one who would learn a lesson tonight.

We would do well to learn a lesson or two from them.

The Army players learned a lesson a year ago, however.