Full Idea
The existence of God has been doubted by some, because they attributed too much to the perceptions of the senses, and God can be neither seen nor touched.
Gist of Idea
Atheism arises from empiricism, because God is intangible
Source
René Descartes (Preface to 'Principles of Philosophy' [1647], p.180)
Book Reference
Descartes,René: 'Discourse on Method/The Meditations', ed/tr. Sutcliffe,F.E. [Penguin 1968], p.180