One must learn by doing the thing, for though you think you know it, you have no certainty until you try

For the things we have to learn before we can do them, we learn by doing them.

Wonder implies the desire to learn

Girl Scouts is a learning experience. We're trying to show the girls that they should learn to do for others and not themselves.

Learning is not child's play; we cannot learn without pain.

What we have to learn to do, we learn by doing.