"If I saw a venomous snake crawling in the road, any man would say I may seize the nearest stick and kill it. But if I found that snake in bed with my children that would be another question. I might hurt the children more than the snake, and it might bite them. But if there was a bed newly made up, to which the children were to be taken, and it was proposed to take a batch of young snakes and put them there with them, I take it no man would say there was any question how I ought to decide."