Full Idea
All philosophies inspired in the Cogito have the problem of building a bridge from the starting point of consciousness to the external world. The result of this is the isolation and solitude of the very ego.
Gist of Idea
The Cogito demands a bridge to the world, and ends in isolating the ego
Source
Victor Velarde-Mayol (On Husserl [2000], 4.7.2)
Book Reference
Velarde-Mayol,Victor: 'On Husserl' [Wadsworth 2000], p.75
A Reaction
This strikes me as a pretty good reason not to develop a philosophy which is inspired by the Cogito.