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Name one piece of advice Percivale's mother gave him.
"Go on your way now, and remember that if dame or damsel ask your aid, give it freely and before all else, seeking no reward. Yet you may kiss the maiden who is willing, but take no more than a kiss, unless it be a ring - but be that only when you place your own ring upon her finger. Beware in whose company you travel on your quest, and see to it that only worthy men come near to your heart: but above all, pray to God each day that He may be with you in all your deeds - and pass not by church nor chapel without pausing awhile in His honour."