Even The Development Of The

A Conceptual Scheme Is Never Discarded Merely Because Of A Few Stubborn Facts With Which It Cannot Be Reconciled; A Conceptual Scheme Is Either Modified Or Replaced By A Better One, Never Abandoned With Nothing Left To Take Its Place.

I Venture To Define Science As A Series Of Interconnected Concepts And Conceptual Schemes Arising From Experiment And Observation And Fruitful Of Further Experiments And Observations. The Test Of A Scientific Theory Is, I Suggest, Its Fruitfulness.

Just Like A Turtle, We Only Make Progress If We Stick Our Neck Out.

A Harvard Education Consists Of What You Learn At Harvard While You Are Not Studying.

Whether A Man Lives Or Dies In Vain Can Be Measured Only By The Way He Faces His Own Problems, By The Success Or Failure Of The Inner Conflict Within His Own Soul. And Of This No One May Know Save God.