dreams or plans that are impossible or unrealistic
des rêves ou des projets impossibles ou irréalistes (des reves ou des projets impossibles ou irrealisitques)
"He’s always building castles in the air about his future."
"Il est toujours en train de construire des castles in the air à propos de son avenir." (il est toujours en train de construire des **castles in the air** a propos de son avenir)
to fail to achieve the intended result
a new beginning filled with hope
feeling uncomfortable in an unfamiliar situation
to remove tension or misunderstanding by talking openly
appearing in a cinema film
a person who is content and satisfied with life