"It is indeed important. But stamina and strength are the most essential," seeing the confused face of his squire, he elaborated further. "When you're mounted your stamina matters little, but on the ground it's the most important, together with strength. Good armour negates a big part of the advantage of speed. And if you have more endurance, you could spend more time practising and polishing your skill at arms. Feel free to ask me any questions."