92 THE MANTRA-YOGI Half skilled to agonise, half skilled to soothe The passion ineluctable, this power Slave to its single end, to storm the tower That holdeth thee, who art Authentic Truth. O golden hawk ! O lidless eye ! Behold How the grey creeps upon the shuddering gold ! Still I will strive ! That by the striving broken I may exhaust this me ! That thou mayst sweep Swift on the dead from thine all-seeing steep— And the unutterable word be spoken.