purposefulness       
noun [ U ] uk/ˈpɜː.pəs.fəl.nəs/ us/ˈpɝː.pəs.fəl.nəs/
 目的
the quality of knowing what you intend to do, or behaviour that shows this
  He has a purposefulness about him. 他是有备而来的。 
 They got onto the crowded train with a calm purposefulness. 他们冷静地登上拥挤的火车,知道自己的任务是什么。 
 See: purposeful
 - More examples
 - The office had a sense of cool purposefulness.
 - She showed confidence and purposefulness.
 - Much detail is packed into the film, along with care and purposefulness.