Percy Julian quotes:

I'm married to a dear little girl who holds a bachelor's degree from the University of Pennsylvania and a master's degree from the University of Pennsylvania and a Ph.D. degree from the University of Pennsylvania.

I remember, as a boy of 17 years of age, this was a fascinating thing for me: how we human beings breathe out carbon dioxide into the air, the leaves of plants pick this carbon dioxide up, and the plant gives off oxygen, which we can breathe in and keep our life going.