Eudes taught about the mystical unity of the Sacred Hearts of Jesus and Mary and wrote:
You must never separate what God has so perfectly united.
So closely are Jesus and Mary bound up with each other that whoever beholds Jesus sees Mary; whoever loves Jesus, loves Mary; whoever has devotion to Jesus, has devotion to Mary.

The most striking characteristic of Eudes' teaching on Devotion to the Sacred Heart — as indeed of his whole teaching on the spiritual life — is that Christ is its centre at all times.
Eudes taught about the mystical unity of the Sacred Hearts of Jesus and Mary and wrote:
You must never separate what God has so perfectly united. So closely are Jesus and Mary bound up with each other that whoever beholds Jesus sees Mary; whoever loves Jesus, loves Mary; whoever has devotion to Jesus, has devotion to Mary.
The most striking characteristic of Eudes' teaching on Devotion to the Sacred Heart — as indeed of his whole teaching on the spiritual life — is that Christ is its centre at all times.
John Eudes