I can teach you

During his days in Calcutta, Dad sustained himself by tutoring rich kids. Because math and science came naturally to him, he was sought after by his classmates to tutor them in the subjects. The stories he told of his tutoring have become more stuff of legend. In his later years one of his favorite comebacks in any situation regardless of what was said was, "I can teach you." We all heard him say this to our teachers, the car mechanic, the grocery store clerk, even himself sometimes.