I reverted easily to my wild state, that is experimentation.

In 1933, the Nazis came to power and the more systematic persecution of the Jews followed quickly. Laws were enacted which excluded Jewish children from higher education in public schools.

In the evenings I studied chemistry at the University of Chicago, the weekends I helped in the family store.

I feel I learned as much from fellow students as from the professors.

I had no new ideas on the physics we might learn, and I could not compete with the younger generation.

I studied chemical engineering. I was a good student, but these were the hard times of the depression, my scholarship came to an end, and it was necessary to work to supplement the family income.