— 174 —
Substance which we know not, no proof against Space without Body.       §17. If it be demanded (as usually it is) whether this Space void of
Body, be Substance or Accident, I shall readily answer, I know not: nor
shall be ashamed to own my Ignorance, till they that ask, shew me
a clear distinct Idea of Substance.
Locke Hum II, 13, §17, p. 174