The Catholic Priest Today

First, here is an excerpt from the Apology of the Augsburg Confession, a Lutheran confession of faith written in the 16th century.

“The gospel allows marriage for those who need it. Nevertheless, it does not compel those to marry who can be continent, provided that they are truly continent. We believe that this freedom should also be conceded to priests. We desire neither to compel anyone to be celibate by force nor to dissolve marriages that have been contracted” (Article XXIII: The Marriage of Priests, 61).

How does one know if he is “continent”? And does the Catholic Church still compel one to be celibate? Can a person become a Catholic priest if he is not celibate?