Attributed to Ignatius of Loyola
«'Go and set the world on fire' (Ite, inflammate omnia).»
Misattributed
Verdict
It is not in Ignatius of Loyola's work
A phrase widely spread in Jesuit tradition as Ignatius's farewell to his envoys, above all Francis Xavier. It does not appear in his letters or in the Autobiography; it is a formula of later piety.
Source: Ignacio de Loyola. Obras. Transcripción, introducciones y notas de Ignacio Iparraguirre, Cándido de Dalmases y Manuel Ruiz Jurado. Madrid: Biblioteca de Autores Cristianos, 1991 (5.ª ed.). ISBN 9788479140342.
What they did say
Verified words of Ignatius of Loyola
«Man is created to praise, reverence, and serve God our Lord, and by this means to save his soul.»
Ejercicios espirituales, [23] Principio y fundamento (trad. inglesa de Elder Mullan, 1914)
«For it is not knowing much, but realising and relishing things interiorly, that contents and satisfies the soul.»
Ejercicios espirituales, [2] segunda anotación (trad. inglesa de Elder Mullan, 1914)
«Every good Christian is to be more ready to save his neighbour's proposition than to condemn it.»
Ejercicios espirituales, [22] presupuesto (trad. inglesa de Elder Mullan, 1914)