I remember Nazi election propaganda posters showing a hateful Jewish face with crooked nose.

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.

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

I survived only a year in Berkeley, partly because I declined to sign the anticommunist loyalty oath.

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

The problem of transmitting scientific knowledge is a very difficult business.

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