A Hundred Meditations of the Love of God, in prose, was first printed from a MS. at Stonyhurst College in 1873.
And yet, though Rembrandt's " Nightwatch " is dated the very year after the publication of the Meditations, not a word in Descartes breathes of any work of art or historical learning.
Here he was able to pursue his own studies under the guidance of the Augustinians, and to begin those labours amongst the sick and poor which gained him in later life the title of "Apostle of Rome," besides paying nightly visits for prayer and meditations to the churches of the city and to the catacombs.
In 1636 he completed his Dialoghi delle nuove science, in which he recapitulated the results of his early experiments and mature meditations on the principles of mechanics.
These letters, of which 311 are extant, are filled chiefly with pious meditations, but they further form a mine of information as to the literary and social conditions of the time, and are the most reliable authority for the history of humanism in the Carolingian age.