The wise indeed say, One should not build castles in the air. 
ðʌ waɪz ɪndid seɪ, wʌn ʃʊd nɑt bɪld kæsʌlz ɪn ðʌ ɛɹ. 
 Indian's voice is very clear and close-sounding, with a monotone delivery in this recording.