Full Idea
Every body is sensitive to everything in the universe, so that one who saw everything could read in each body what is happening everywhere, and even what has happened and will happen.
Gist of Idea
Everything in the universe is interconnected, so potentially a mind could know everything
Source
Gottfried Leibniz (Monadology [1716], §61)
Book Reference
Leibniz,Gottfried: 'Philosophical Writings', ed/tr. Parkinson,G.H.R. [Dent 1973], p.189