True science teaches, above all, to doubt and to be ignorant. – Miguel de Unamuno

Shun no toil to make yourself remarkable by some talent or other yet do not devote yourself to one branch exclusively. Strive to get clear notions about all. Give up no science entirely for science is but one. – Lucius Annaeus Seneca

Beyond that, I seem to be compelled to write science fiction, rather than fantasy or mysteries or some other genre more likely to climb onto bestseller lists even though I enjoy reading a wide variety of literature, both fiction and nonfiction. – Joan D. Vinge