Virtue is a Practice

To learn virtue, one must study the fundementals (for instance, the need for moderation between extremes), observe those who live well and practice. (Aeon J. Skoble)

2 Peter 1:5-7

But also for this very reason, giving all diligence, add to your faith virtue, to virtue knowledge, to knowledge self-control, to self-control perseverance, to perseverance godliness, to godliness brotherly kindness, and to brotherly kindness love.