To teach is to learn twice.

Enseigner, c'est apprendre deux fois

To teach is to learn.

When one teaches, two learn.

In learning we teach and in teaching we learn.

Explain what you learned to someone else. Teaching forces learning.

The most important part of teaching is to teach what it is to know.

If you want to master something, teach it. The more you teach, the better you learn. Teaching is a powerful tool to learning.

The teacher is the lesson.

So you see [the act of teaching] teaches me also, and is as good as a general review of what I've learned, in a pleasanter way than going over it alone.

The best way to learn something is to have to teach it.

Teach to learn. Watch yourself before you teach.

If you become a teacher, by your pupils you'll be taught.

He continues to teach because it provides him with a livelihood; also because it teaches him humility, brings it home to him who he is in the world. The irony does not escape him: that the one who comes to teach learns the keenest of lessons, while those who come to learn learn nothing.