Brethren, let us mind our own business - that is, the calling the Lord has called us to - to do everything we can to promote the good of the Cause of Truth, and never ask how big we are, or inquire who we are; but let it be, 'What can I do to build up the Kingdom of God upon the Earth?'

The quote "Brethren, let us mind our own business..." by Brigham Young emphasizes the importance of dedicated service, humility, and staying focused on one's spiritual calling. Young, a prominent leader in the early Latter-day Saint movement, urges believers to concentrate on their divine purpose rather than becoming distracted by status, pride, or comparisons. The phrase "mind our own business" here doesn't refer to isolation or selfishness, but rather to staying faithful and diligent in the work God has assigned.

Young continues by defining this business as doing everything possible to promote the Cause of Truth—a reference to spreading the principles of faith, righteousness, and building the Kingdom of God upon the Earth. Rather than focusing on questions like “How important am I?” or “Who am I in the hierarchy?”, he shifts the emphasis to action and selfless contribution. The call is to engage fully in meaningful, spiritual work without seeking recognition or power.

The quote reflects the values central to Mormon theology and Brigham Young's leadership, especially during the period of westward migration and the founding of settlements in the American West. During times of hardship and uncertainty, Young’s guidance aimed to inspire unity, discipline, and commitment among followers. His words offered both spiritual direction and practical motivation to focus on community building and divine service.

Ultimately, this quote is a reminder of the virtue of humble purpose. Rather than being consumed by self-importance or competition, Young teaches that true worth is found in one's contribution to a higher cause. It’s a timeless message that encourages us to align our actions with our spiritual values, and to measure success not by size or status, but by how faithfully we serve.