First, the usual stop at Wikipedia (two separate links as noted):
Jeanne-Marie Bouvier de la Motte-Guyon (commonly known as Madame Guyon) (13 April 1648 – 9 June 1717) was a French mystic and one of the key advocates of Quietism. Quietism was considered heretical by the Roman Catholic Church, and she was imprisoned from 1695 to 1703 after publishing a book on the topic, A Short and Easy Method of Prayer.
Quietism is a Christian philosophy that swept through France, Italy and Spain during the 17th century, but it had much earlier origins. The mystics known as Quietists insist, with more or less emphasis, on intellectual stillness and interior passivity as essential conditions of perfection.
Guyon believed that one should pray all the time, and that in whatever one does, one should be spending time with God. “Prayer is the key of perfection and of sovereign happiness; it is the efficacious means of getting rid of all vices and of acquiring all virtues; for the way to become perfect is to live in the presence of God. He tells us this Himself: “walk before me, and be thou perfect” Genesis 17:1. Prayer alone can bring you into His presence, and keep you there continually.”[1]
As she wrote in one of her poems: “There was a period when I chose, A time and place for prayer … But now I seek that constant prayer, In inward stillness known …”
Here are a few of her writings:
The soul seeks God by faith, not by the reasonings of the mind and labored efforts, but by the drawings of love; to which inclinations God responds, and instructs the soul, which co-operates actively. God then puts the soul in a passive state where He accomplishes all, causing great progress, first by way of enjoyment, then by privation, and finally by pure love.
There are three kinds of silence. Silence from words is good, because inordinate speaking tends to evil. Silence, or rest from desires and passions is still better, because it promotes quietness of spirit. But the best of all is silence from unnecessary and wandering thoughts, because that is essential to internal recollection, and because it lays a foundation for a proper reputation and for silence in other respects.
We must forget ourselves and all self-interest, and listen, and be attentive to God.
If knowing answers to life’s questions is absolutely necessary to you, then forget the journey. You will never make it, for this is a journey of unknowables, – of unanswered questions, enigmas, incomprehensibles, and most of all, things unfair.
Regarding your spiritual life, be open, simple and like a child. In the depths of your spirit be like a drop of water lost in an ocean, and be no longer conscious of yourself. In this enlarged condition see and enjoy everything from within God. Within yourself there is only darkness, but in God there is only light. Let God be everything to you…. God’s love is like a weight within us, causing us to sink deeper and deeper into God.
Holy Solitude
Kind solitude
Away from the world and the noise
Divine quietude,
Silence, like the night!
Happy the one that possesses you,
And tastes your sweetness,
The cure of all ills!
Unfortunate are those who do not love you!
It is blessedness,
To be heart to heart with God:
There no disquietude
Troubles the peace of this place.
Rest assured, it is the same God who causes the scarcity and the abundance, the rain and the fair weather. The high and low states, the peaceful and the state of warfare, are each good in their season. These vicissitudes form and mature the interior, as the different seasons compose the year…God loves you; let this thought equalise all states. Let him do with us as with the waves of the sea, and whether he takes us to his bosom, or casts us upon the sand, that is, leaves us to our own barrenness, all is well.
Sources: GiGA Quotes, Quotation Park, Wikiquote, Daily Christian Quotes, Madame Guyon Blogspot, Relevant Blog Blogspot, Rachel Jane Rickert