Portraits Quotes - Page 7
"A History of Science". Book by George Sarton. Volume 2: "Hellenistic Science and Culture in the Last Three Centuries B.C.", Preface, 1959.
"Aphorisms". Book by Georg Christoph Lichtenberg. Notebook D 20, 1799.
Alexandra Kerry (2008). “Notes from the Trail: Presidential Politics from the Inside Out”, p.8, Rodale