Woe to me if I do not preach the gospel! (1 Cor 9:16)

Here's a gem from John Paul II's encyclical on the Church's missionary activity, Redemptoris Missio, n. 40:

All who believe in Christ should feel, as an integral part of their faith, an apostolic concern to pass on to others its light and joy. This concern must become, as it were, a hunger and thirst to make the Lord known, given the vastness of the non-Christian world. [emphasis added]

Wow!