Fortitude is a cardinal virtue that enables individuals to resist temptations, overcome obstacles, and face trials with courage, including the willingness to sacrifice one’s life for a just cause (CCC 1808). As a human virtue, it is acquired through human effort and is the fruit of morally good acts that dispose the person for communion with divine love (CCC 1804). These virtues serve as stable dispositions that govern actions and guide conduct in accordance with reason and faith (CCC 1834), growing through education, deliberate acts, and perseverance, while being purified and elevated by divine grace (CCC 1839).

This virtue operates alongside the other cardinal virtues of prudence, justice, and temperance to govern actions and order passions according to reason and faith (CCC 1805). Prudence specifically guides practical reason to discern the true good and choose the right means of achieving it, thereby setting the rule and measure for fortitude and the other virtues (CCC 1806). Furthermore, fortitude is informed and given life by the theological virtues of faith, hope, and charity (CCC 1841). Charity, in particular, acts as the form of all virtues, animating and inspiring the practice of fortitude (CCC 1828).

The moral life is further sustained by the gifts of the Holy Spirit, which include the gift of fortitude (CCC 1830). This divine gift perfects the acquired virtue of fortitude and makes the believer docile in following divine inspirations (CCC 1831). Such spiritual strength is complemented by other virtues that accompany faith, such as endurance and devotion, which ensure that a believer does not remain idle or unfruitful in their knowledge of Christ.

In the Christian life, the practice of fortitude is manifested in the willingness to suffer with Christ and renounce worldly desires to live according to God’s will. This includes perseverance in faith despite afflictions and trials, which leads to the possession of the unshakable kingdom of God (Hebrews 12:14-29).