In this atmosphere I soon became interested in nucleic acids. Frederick Sanger
Start with a planet like the earth, with a complement of simple compounds bound to exist upon it, add the energy of a nearby sun, and you are bound to end with nucleic acids. You can't avoid it. Isaac Asimov
The nucleic acids have considerable biological importance because of their role in cell growth and in the transmission of hereditary characters. Severo Ochoa
I think you can say that life is a system in which proteins and nucleic acids interact in ways that allow the structure to grow and reproduce. It's that growth and reproduction, the ability to make more of yourself, that's important. Andrew H. Knoll