Humility is a condition for peace

"Truly, truly, the Savior of the world has laid meekness and humility at the foundation of the virtues. Abstinence, fasting, austerity, inward or outward poverty, good works, miracles - all are nothing without humility of heart. But all these things will come to life and receive blessing, if humility sustains them. 

Humility of heart is the generative force of virtue; the stem and branches proceed only from the root. Because its price is infinite, because it is the foundation on which all spiritual perfection is built, the Lord wanted to entrust to no one but himself the task of saying to us: ‘Be humble’.

And because humility is the universal guardian, the Virgin Mary, as if she had forgotten all the other virtues of her soul and body, admired only one thing in herself, and gave only one reason for the incarnation of the Son of God in her: ‘Because he looked upon the humility of his handmaid.’ It is for this, and for nothing else, that the generations raised their voices to proclaim her blessed."

Saint Angela of Foligno (d. January 4, 1309)

Excerpt from her Book of Visions and Instructions