"Our part of Poland was under Russian occupation from 1939-1941."

"I learned English, my sixth language at this point, quite quickly."

"I came to a happy Jewish family in dark days in Europe."

"I am a teacher, and I am proud of it. At Cornell University I have taught primarily undergraduates, and indeed almost every year since 1966 have taught first-year general chemistry."

"One day I discovered that one could get the barrier to internal rotation in ethane approximately right using this method. This was the beginning of my work on organic molecules."