now tinwelint thought in his heart that ufedhin and his gnomes were of the utmost service to the dwarves , and no covetice would be strong enough to bring them to forsake him ; but that gnome was very wroth , saying : `` the nauglath are no thieves , 0 king , nor yet their friends '' ; but tinwelint said : `` yet the light of overmuch gold has made many thieves , who were not so before , '' and ufedhin perforce consented , yet he forgave not tinwelint in his heart .