When a person throws a stick for a dog to fetch, the intellectual divide between him and the dog does not change-however, in one regard, they are in full accord.
At the moment that the dog retrieves the stick, it fulfills the person’s will.
Were the dog to meditate and attempt to tune in to its master’s thought, it would very likely accomplish nothing.
But at the moment that the dog obeys the command to retrieve the stick, there exists a point of complete unity between the person who has the will, the will itself, and the dog, that fulfills that will-the commander, command, and commanded.
–Rabbi Adin Steinsaltz