Full Idea
The world is a world shared with others, so that far from being a solipsistic ego ...Dasein finds itself already amongst others.
Gist of Idea
Dasein finds itself already amongst others
Source
report of Martin Heidegger (Being and Time [1927]) by John D. Caputo - Heidegger p.226
Book Reference
'A Companion to Continental Philosophy', ed/tr. Critchley,S/Schroeder,W [Blackwell 1999], p.226
A Reaction
Phenomenologists don't seem bothered about the problem of knowing other minds. If you take something for granted, it ceases to be a problem to be solved!