During the 1950s, I decided, as did many others, that many practical problems were beyond analytic solution and that simulation techniques were required. At RAND, I participated in the building of large logistics simulation models; at General Electric, I helped build models of manufacturing plants.

Portfolio theory, as used by most financial planners, recommends that you diversify with a balance of stocks and bonds and cash that's suitable to your risk tolerance.

I was born in Chicago in 1927, the only child of Morris and Mildred Markowitz, who owned a small grocery store. We lived in a nice apartment, always had enough to eat, and I had my own room. I never was aware of the Great Depression.

In 1989, I was awarded the Von Neumann Prize in Operations Research Theory by the Operations Research Society of America and The Institute of Management Sciences. They cited my works in the areas of portfolio theory, sparse matrix techniques and the SIMSCRIPT programming language.

When I was a kid I got so much help from the Church. When I was a kid, our family was so poor they couldn't afford me to go to school, so there was an American family that send the money to the church to support my school fees.

My name is not big enough for people to go, 'Let me throw money at you because you're so famous!'

Violence against women in this country is not levied against just Democrats, but Republicans as well... not just rich people or poor people. It knows no gender, it knows no ethnicity, it knows nothing.

When you go for first date, you are so conscious about what you are wearing, how you smell, how much money you have in your wallet. You have to plan the day - you have to plan the traffic - but in a relationship, you take all the things for granted.