Bernardino, an aristocrat by birth and culture, had the gift of bridging any gap between himself and his listeners, thus enabling everyone to access his experience of faith. Through his public sermons, delivered in a simple language, he sought to spread the Truth of the Gospel and the virtue of charity. From the many pulpits erected in important cities of central and northern Italy, Bernardino drew attention to the corruption of his contemporaries by making use of the novel weapons of irony and exhortation. The strength of his words was able to arouse immediate emotional reactions, conversions and reconciliations. People flocked from miles around to hear that thin and haggard man who, notwithstanding, had a powerful voice, according to the records of the time. The power of Bernardino’s communication skills is testified by the cycle of sermons given in Piazza del Campo in Siena from August 15th to October 5th 1427, recorded by the humble cloth shearer Benedetto di Bartolomeo, who even documented the exclamations and gestures of the preaching saint. Aware that he could not impose upon the faithful the austere principles of the Franciscan Observance that animated his steps, he offered them the respect of the ideals of balance, order and harmony, the same values ​​translated into painting by Ambrogio Lorenzetti almost a century before in the marvellous frescoes of the Palazzo . . .