Be your holiness persuaded that I am, and ever shall be, of such moderation as to keep aloof, as far as possible, from every undertaking which may testify any hatred towards the Roman Catholic religion. Nay, rather I will seize all opportunities, by a gentle and generous mode of conduct, to remove all sinister suspicions entirely; so that, as we all confess one undivided Trinity and one Christ crucified, we may be banded together unanimously into one faith.

Letter to Pope Gregory XV (20 April, 1623).