Apparently there are three levels of brain activity. Level 1 is the lowest level - the amount of concentration required to, say, delete emails or serve in congress.

Dogs have important jobs, like barking when the doorbell rings, but cats have no function in a house whatsoever.

You can usually tell that a man is good if he has a dog who loves him.

Dog’ is ‘God’ spelled backward; you know that. That’s why you’re here, to help the nuns do God’s work.

As for me: I loyally remained right where I was, remembering the very first I had ever seen the boy and then just now, the very last time-and all the times in between. The deep aching grief I knew I would feel would come soon enough, but at that moment mostly what I felt was peace, secure in the knowledge that by living my life the way I had, everything had come down to this moment. I had fulfilled my purpose.

I'd hope that the story A Dog's Purpose helps everyone reflect on how many different "lives" we all live - from children to teenager to adults to seniors - and how each phase of life presents new situations along the way to discovering our ultimate purpose.

That's the lesson of the dogs, that it's important to both live in the moment and then go on to the next wonderful thing.