he took thought therefore how he should make for himself a kingly dwelling , and a place that should be strong , if evil were to awake again in middle-earth ; and he sought aid and counsel of the dwarves of belegost they gave it willingly , for they were unwearied in those days and eager for new works ; and though the dwarves ever demanded a price for all that they did , whether with delight or with toil , at this time they held themselves paid .