1. Charity: This is the foremost principle. Knights are called to serve others, especially those in need, through acts of charity and giving. They support various charitable causes, including disaster relief, scholarships, and assistance for the poor and marginalized.

2. Unity: Unity among members is crucial. The organization emphasizes the importance of brotherhood and solidarity. Knights work together for a common cause, supporting one another and strengthening their collective impact.

3. Fraternity: This principle focuses on providing mutual support to members and their families. It promotes a sense of community and brotherhood, offering social, spiritual, and financial support to one another.

4. Patriotism: The Knights of Columbus also emphasize love and loyalty to one's country. They encourage members to be active, responsible citizens, and they support the ideals of freedom and democracy.

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These core tenets guide the actions and values of the Knights of Columbus, fostering a commitment to service, community, and faith.