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

“You can ‘prove’ anything empirically… if you ignore enough data and/or variables. [But, that is not the same as arriving at the Truth].”

– N. Taib

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

– Thomas Kuhn

“This is the true joy in life, the being used for a purpose you consider a mighty one, the being a force of nature rather than a foolish, selfish clod of ailments and grievances complaining that the world will not devote itself to making you happy.”

– George Bernard Shaw

“The wicked leader is he or she who the people despise. The good leader is he or she who the people revere. The great leader is he or she who the people say, ‘We did it ourselves.'”

– Lao Tzu

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

– Maya Angelou