Why did Franklin include cleanliness as a virtue?

Franklin believed external cleanliness reflects and reinforces internal order. A clean body, clothes, and environment support clear thinking, self-respect, and the respect of others.

Is 'cleanliness is next to godliness' from the Bible?

No. The phrase comes from a 1778 sermon by John Wesley, not the Bible. However, many religious traditions do emphasize physical purity as connected to spiritual health, including Jewish, Islamic, and Hindu practices.

How does cleanliness affect mental health?

Research shows connections between cluttered environments and increased stress, difficulty focusing, and lower wellbeing. Clean, ordered spaces reduce cognitive load and can improve mood and productivity.

What did Franklin mean by clean habitation?

Franklin included not just body and clothes, but living space. 'Habitation' means your home and workspace. A clean environment supports the mental clarity needed for practicing other virtues.

How can I use cleanliness as a self-improvement tool?

Start each day by making your bed (a small win). Keep workspace clear. Maintain personal grooming standards. Use cleaning rituals as transitions between activities. Notice how environment affects your mental state.

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The Virtues

What Is Cleanliness as a Virtue? Franklin's Tenth Virtue

Tolerate no uncleanliness in body, clothes or habitation. Learn how external order supports mental clarity and discipline.

8 min read

•

January 26, 2026

Among Franklin's 13 virtues, Cleanliness might seem oddly practical—almost mundane. Yet this tenth virtue connects external order to internal clarity in ways philosophers and psychologists have long recognized.

Franklin understood that our environment shapes our mind. A clean body, clean clothes, and clean space create conditions for focused, virtuous living.

Key Takeaways

Franklin defined cleanliness as: "Tolerate no uncleanliness in body, clothes or habitation."
Cleanliness applies to three domains: physical body, clothing, and living space
Many traditions connect physical purity to spiritual/mental clarity
Modern research confirms environment affects cognition and wellbeing

What Did Benjamin Franklin Say About Cleanliness?

"Tolerate no uncleanliness in body, clothes or habitation."
— Benjamin Franklin

Franklin's precept is comprehensive: the body itself, what covers it (clothes), and where it resides (habitation). Each domain requires attention; dirt in any degrades the whole.

Wisdom on Cleanliness

Maimonides: Physical and Spiritual Purity

The Jewish philosopher Maimonides (1138–1204) connected physical cleanliness to intellectual and spiritual capacity. A healthy, clean body supports a clear mind capable of wisdom.

Islamic Tradition: Tahara

In Islam, tahara (purity) is essential for prayer. Physical cleanliness is prerequisite to approaching the divine—outer purity reflecting inner intention.

John Wesley: Cleanliness and Godliness

"Cleanliness is indeed next to godliness."
— John Wesley, 1778

Japanese Philosophy: 5S

Japanese workplace methodology includes seiri (sort), seiton (set in order), seiso (shine/clean). Cleanliness is recognized as foundational to productivity and quality.

Practice Franklin's System Today

Track your virtues with the same method Franklin used—now in a beautiful iOS app with morning reflections and evening reviews.

Get the App

What Makes Franklin's Approach Different?

Three Complete Domains

Franklin didn't just say "be clean"—he specified body, clothes, and habitation. Someone might shower daily but live in chaos. Franklin requires all three.

External Supports Internal

Like his virtue of Order, Cleanliness reflects Franklin's understanding that external conditions shape internal states. A dirty environment breeds disordered thinking.

Cleanliness in the Modern World

The Psychology of Environment

Modern research confirms what Franklin intuited: cluttered environments increase cortisol levels, impair focus, and reduce wellbeing. Clean spaces support clear thinking.