Theory:

I saw a snake and ran away...
Some snakes are dangerous, they say;
But mother says that kind is good,
And eats up insects for his food.
So when he wiggles in the grass
I’ll stand aside and watch him pass,
And tell myself, “There’s no mistake,
It’s just a harmless garden snake!”
 
                                    ~MURIEL L. SONNE
Reference:
National Council of Educational Research and Training (2007). Honeycomb. Garden Snake: Muriel L. Sonne (pp. 137-138). Published at the Publication Division by the Secretary, National Council of Educational Research and Training, Sri Aurobindo Marg, New Delhi.