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I was always very strong in math, physics and calculus.

I was always good at math and science and physics.

I was in the military, and then I went to university to study biology.

I was particularly good at math and science.

Later in the fifties I got involved in kinetic studies using my long forgotten math background.

The subject I was best at in school was biology.

As a child, I remember my own intensive interest in biology, birds, other animals and flowers and was determined at an early age to become a scientist.

In the late '30's when I was in college, physics - and in particular, nuclear physics - was the most exciting field in the world.

Yes, I was really good in physics and in math.

I was the Chair of the first department of medical physics in a medical school in the U.S.