From the Lives of the Brethren:
The Chancellor of the University in Paris, having decreed [February 1256] that this same Brother Thomas should maintain his thesis publicly next day for the doctorate, that same night this brother beheld a figure come and stand before him with an open book in which were written the words:
“Thou waterest the hills from above, the earth shall be filled with the fruit of thy works” (Ps. ciii 13).
He therefore chose them for the text of his thesis.
Charlotte Lay Dominicans 