"The skeptic (is not he) who doubts, but he who investigates or researches, as opposed to he who asserts
and thinks that he has found."
- Miguel de Unamuno, 1864-1936, Spanish philosopher, essayist, novelist, poet, and playwright
"This I know - that I know nothing."
Plato (424 – 348 BC) Greek philosopher, mathematician,
founder of the first institution of higher learning in the Western world