Describe symbolism in Asterix the Gaul by Rene Goscinny

Asterix is a Gaul warrior. He is a very small guy, but because he takes Getafix's potion for strength, he is superhumanly strong. Asterix's strength comes from the potion, but his intelligence and cunning come from within him. He is friends with Obelix and Getafix. He is the hero of the story.