Sean M. HACKETT, Ph.D.

“The happiness of your life depends upon the quality of your thoughts.”

– Marcus Aurelius

 “Knowing others is intelligence; knowing yourself is true wisdom. Mastering others is strength; mastering yourself is true power.”

– Lao Tzu

“We don’t see things as they are, we see them as we are.”

– Anaïs Nin

“The test of a first-rate intelligence is the ability to hold two opposing ideas in mind at the same time and still retain the ability to function.”

– F. Scott Fitzgerald

“Tell me and I forget, teach me and I may remember, involve me and I learn.”

– Benjamin Franklin

Portfolio of Activities


At HACKETT LABS my focus is on teaching, researching, advising/coaching, and engaging in service activities at universities.


At MDI.TOKYO my focus is on delivering world-class Executive Education and Professional Learning & Development experiences to company employees and groups.

“Only by externalization, by entering into social relationships, can we develop the interiority of our own person.”

-Jurgen Habermas

“There are people across the country who deny evidence, invent their own facts and live in their own fantasyland.”

– David Brooks

“Above all, don’t lie to yourself. The person who lies to himself or herself and listens to their own lie comes to a point that they cannot distinguish the Truth within, or around their self, and so lose all self-respect and all respect for others. And having no respect they cease to love.”

– Fyodor Dostoevsky

“The best moments in our lives are not the passive, receptive, relaxing times… The best moments usually occur if a person’s body or mind is stretched to its limits in a voluntary effort to accomplish something difficult and worthwhile.”

– Mihaly Csikszentmihalyi

“The whole purpose of reasoning – of logic – is to arrive at the Truth. Not to pursue the Truth would be absurd. Truth is what gives meaning to all our endeavors.”

– D. Q. McInerny

“People will forget what you said, people will forget what you did, but people will never forget how you made them feel.”

– Maya Angelou

“though the world does not change with a change of
paradigm, the scientist afterward works in a different world.”

– Thomas Kuhn