From Latin temperantia, "moderation, self-restraint." Greek enkrateia — "inner strength, power over the self, mastery." A fruit of the Spirit (Galatians 5:23, KJV "temperance," ESV "self-control") and one of the four classical cardinal virtues (prudence, justice, fortitude, temperance). Webster 1828: "moderation; particularly, habitual moderation in regard to the indulgence of the natural appetites and passions; restrained or moderate indulgence." Biblical temperance is the Spirit-wrought mastery of appetite, impulse, tongue, temper, and desire — not repression but ordered self-command under God.
Temperance is the virtue the modern West has most completely lost. Four observations. (1) Necessary for every other virtue. Without self-control, love collapses into indulgence, faith into fickleness, patience into eruption. The undisciplined soul cannot produce any sustained Christian virtue because all virtues require the ability to say "no" to lesser goods for greater. Peter's ladder is instructive: "Supplement your faith with virtue, and virtue with knowledge, and knowledge with self-control, and self-control with steadfastness" (2 Peter 1:5-6). Self-control is the structural beam. (2) Paul's athletic image. "Every athlete exercises self-control in all things... I discipline my body and keep it under control, lest after preaching to others I myself should be disqualified" (1 Corinthians 9:25-27). The word is hypōpiazō — literally "to strike under the eye, to give a black eye." Paul beats his body into submission to the gospel's demands. (3) Self-control is always Spirit-produced. It is listed as a fruit of the Spirit, not a product of willpower alone. Willpower depletes; the Spirit renews. The strongest human disciplines (Stoicism, Buddhism, monasticism) achieve remarkable self-mastery; the Spirit produces self-control that still flourishes in joy. (4) Trained through ordinary disciplines. Fasting, prayer, saying "no" to small indulgences, keeping appointments, honoring commitments, managing speech — these practices make the muscle of self-control stronger over time. Begin small. Progress compounds.