The Christian mystic, a pastor and organiser in the Dominican Order, espoused a form of Pantheistic Mysticism, of which his clearest statement was:
All creatures are the utterance of God.
To Quakers, his philosophy seems very accessible. He spoke of passing beyond God, to a simple ground a still desert. He stressed the unity of God and the capacity of the individual soul to become one with God during life.
In silence, man can most readily preserve his integrity.
Apprehend God in all things,
For God is in all things.
Every single creature is full of God
And is a book about God.
Every creature is a word of God.
If I spent enough time with the tiniest creature
Even a caterpillar
I would never have to prepare a sermon.
So full of God
Is every creature.