As he wandered, troubled, his quick ear caught the clang of metal, though he knew not what it was. And swiftly he ran towards the sound a long way, until he came into a clearing, and found two knights on horseback doing mighty battle. One bore a red shield and the other a green one. He looked eagerly at this strange sight, and the blood sang in his veins. And then he saw that the green knight was of slighter frame than the other, and was weakening before the strokes of the red knight. Full of anger at the sight, Perceval launched one of his hard-wood javelins at the red knight. With such force did it go, and so true was the aim, that it pierced the coif of the knight, and entered between the neck and the head, and the red knight swayed and then clattered to the ground, dead. The green knight came and thanked Perceval for thus saving his life. 'Are knights then so easy to slay?' asked the lad. 'Methought that none might pierce through the hauberk of a knight, and I sorrow that I have slain him, not thinking what I did.' 'He was a full evil knight,' said the other, 'and deserved death richly for his many villainies and oppressions of weak orphans and friendless widows.' The knight took the body of the dead knight to be buried in a chapel, and told Perceval he could have the horse. But the lad would not have it, though he longed greatly to possess it, and the green knight took it with him. Then Perceval went home, sad, yet wild with wonder at what he had done. He found his mother well again, but very sorrowful. And for fear of giving her pain, he did not tell her of the knight he had slain. She called him to her, and said: 'Dear son of mine, it seems I may not keep thy fate from thee. The blood of thy warlike generations before thee may not be quenched, whatever fond and foolish plans I made to keep thee from knowledge of battle and weapons. Dear son, dost thou desire to ride forth into the world?' 'Yes, mother, of a truth,' said Perceval. 'I shall not be happy more until I go.' 'Go forward, then,' she said weeping, 'and God be with thee, my dear son. And as I have no man who is strong of his hands, thou must go alone, yet will I give thee gold for thy proper garnishing and lodging. But make all the haste ye may to the court of King Arthur at Caerleon-upon-Usk, for there are the best and the boldest and the most worshipful of knights. And the king will give thee knighthood. And wherever thou seest a church, go kneel and repeat thy prayers therein; and if thou hearest an outcry, go quickly and defend the weak, the poor and the unprotected. And be ever tender towards women, my son, and remember that thy mother loves thee and prays for thy stay in health and life. And come thou to see me within a little while.' And he thanked her, saying he would do naught that should shame her, but would remember all the nobleness of her teaching; also, that he would return to see her within a little while.