A FOOL when he has spoken has done all

Insights

Revelation of Folly

The proverb symbolizes that a fool, by speaking, immediately reveals the extent of his ignorance or weakness, having unwittingly exposed himself completely.

Lack of Substance or Action

It also suggests that for a fool, words are a substitute for action or meaningful engagement—once he has spoken, he feels his duty is done, regardless of actual results or understanding.

Historical Commentary

The notion that fools are 'all done' once they've spoken is echoed in Renaissance and early modern sources, where talkativeness is linked to self-exposure. Silence, by contrast, might have hidden their limitations.

Psychological Perspective

Psychologically, the proverb highlights a tendency to overvalue one's own speech while neglecting the need for listening, reflection, or follow-through—traits associated with immaturity or narcissism.

Social Critique

Socially, it criticizes those who mistake speech for accomplishment, warning that empty words can prematurely end meaningful participation and expose incompetence.

Rhetorical Devices

Ellipsis

The proverb omits further detail, relying on implication and context to deliver its full force—what remains unsaid is as telling as what is spoken.

Antithesis

Contrasts the fool’s sense of finality with the reality that speech is often only the beginning of true engagement, emphasizing his lack of substance.

Irony

There is an ironic undertone: what the fool sees as the completion of his task is in fact the exposure of his shortcomings.