I know that many of you do wear such a cross of Christ, not in any ostentatious way, not in a way that might harm you at your work or recreation, but a simple indication that you value the role of Jesus Christ in the history of the world, that you are trying to live by Christ's standards in your own daily life.

This quote is saying that many people wear a cross of Jesus Christ to represent their beliefs and values. They do not wear it in a showy way that might cause harm to themselves or others, but as a reminder that the teachings of Jesus Christ are important and that the wearer is trying to live in accordance with those teachings.