Source: where does he say he knew better than God?
Short of a source, by what power to you claim to know his thoughts?
Either way, your response is contrary to your own catechism.
819 "Furthermore, many elements of sanctification and of truth"273 are found outside the visible confines of the Catholic Church: "the written Word of God; the life of grace; faith, hope, and charity, with the other interior gifts of the Holy Spirit, as well as visible elements."274 Christ’s Spirit uses these Churches and ecclesial communities as means of salvation, whose power derives from the fullness of grace and truth that Christ has entrusted to the Catholic Church. **All these blessings come from Christ and lead to him,**275 and are in themselves calls to "Catholic unity."276