Franklin advises dealing with matters that require thought and judgement before eating a substantial meal. His image of the “full belly” suggests that physical comfort and satiety can encourage sluggishness, making both careful thinking and energetic action less appealing. The saying therefore connects sound deliberation with choosing conditions in which attention is likely to be strongest.

The observation should not be treated as a universal medical rule, since people respond differently to food and fatigue. Its broader point is practical: important decisions are better approached when those involved are alert and able to concentrate. Franklin also reflects his recurring preference for moderation, suggesting that overindulgence can interfere with purposeful activity. The proverb can therefore be read as advice to consider not only what must be decided, but also when people are best placed to think clearly about it.