Quote by Robert Green Ingersoll“Reason, observation, and experience the holy trinity of science.”— Robert Green IngersollFavCopyquote and authorShare ImageShare imageCreate a quote imagePick a color theme, then download a format.Color themeMatch siteFavQsMintSunMidnightFormatPortrait1080 × 1350 · 4:5Landscape1200 × 630 · 1.91:1About the authorRobert Green IngersollMore from Robert Green Ingersoll