Full Idea
For Husserl monads have windows because they communicate with each other. The windows of the monads are the acts of empathy.
Gist of Idea
Husserl's monads (egos) communicate, through acts of empathy.
Source
report of Edmund Husserl (Cartesian Meditations [1931]) by Victor Velarde-Mayol - On Husserl 4.7.5
Book Reference
Velarde-Mayol,Victor: 'On Husserl' [Wadsworth 2000], p.79
A Reaction
Leibniz said his monads (which include minds) have 'no windows'. The mere existence of empathy (or mirror neurons, as we would say) is hardly sufficient to defeat solipsism.
Related Idea
Idea 21226 Husserl sees the ego as a monad, unifying presence, sense and intentional acts [Husserl, by Velarde-Mayol]