Fundamental character is fixed from birth and cannot be fundamentally altered. A person born with a certain nature will keep that nature until death.
The geometric imagery of this proverb — round and square as metaphors for opposing character types — is strikingly abstract for a popular saying, and suggests a sophisticated intellectual origin that was subsequently simplified into proverbial form. The round and the square have long been symbols in European aesthetic and philosophical thought: the circle represents wholeness, completeness, and natural form, while the square represents rigidity, angularity, and artificiality. In the proverb the pair is used more loosely to mean 'opposites,' but the geometric metaphor retains a sense that the round-born person and the square-born person are different shapes of humanity that cannot be transformed into each other. The saying appears in Italian collections from the sixteenth century and is closely related to 'Il lupo perde il pelo ma non il vizio' in its pessimism about the possibility of fundamental character change. Both proverbs reflect a pre-modern deterministic view of personality that contrasts with modern psychological beliefs about the plasticity of character. The saying is typically used by resigned observers of someone who has failed to change despite repeated opportunities.
The geometric abstraction suggests a learned origin that filtered into popular proverb tradition; documented in Italian collections from the 1500s.
A disorganized person
Ho cercato di aiutarlo a essere più ordinato per anni. Ma chi nasce tondo non muore quadrato.
I tried to help him be more organised for years. But you can't change your fundamental nature.
A pessimist
Vede sempre il lato negativo di tutto. Chi nasce tondo non muore quadrato.
She always sees the negative side of everything. You can't change your fundamental nature.
A stubborn relative
Non cambierà mai idea — chi nasce tondo non muore quadrato.
He'll never change his mind — you can't change your fundamental nature.
A generous friend
È sempre generosa, non importa quanto guadagni. Chi nasce tondo non muore quadrato — in senso positivo.
She's always generous, no matter how much she earns. You can't change your fundamental nature — in a good sense.