Essential rightness. It’s the sole value responsible for the longevity of A.T. Kearney. Since 1926, we have been trusted advisors to the world's foremost organizations, and we continue to live by the principles established by our founder Andrew Thomas (Tom) Kearney so long ago: “Our success as consultants will depend on the essential rightness of the advice we give and our capacity for convincing those in authority that it is good.”