Sentence:  Breathes there the man, with soul so dead, / Who never to himself hath said, / This is my own, my native land! ... The wretch, <WSD>concentred</WSD> all in self, / Living, shall forfeit fair renown, / And, doubly dying, shall go down / To the vile dust, from whence he sprung, / Unwept, unhonour'd, and unsung. 
Meaning of the word marked with <WSD> tags:  To condense, to concentrate.