I was born in 1923 into a middle class Jewish family in Vienna, a few years after the end of World War I, which was disastrous from the Austrian point of view.

I was fortunate to find an extraordinary mathematics and applied mathematics program in Toronto.

My commitment to a humane and peaceful world continues to this day.

During one or two summers, as well as part-time during the school year, I worked for a small Canadian company which developed electrical instruments for military planes.

I was born in 1923 into a middle class Jewish family in Vienna, a few years after the end of World War I, which was disastrous from the Austrian point of view.

My father, who had lost a brother, fighting on the Austrian side in World War I, was a committed pacifist.

I have just joined the Board of the Population Institute because I am convinced that early stabilization of the world's population is important for the attainment of this objective.