October 16, 2014 Photo (289/365): "Observation. Reflection. Experiment."
« Il faut que l'observation de la nature soit assidue, que la réflexion soit profonde, et que l'expérience soit exacte. »
- Denis Diderot
"Observation collects facts. Reflection combines them. Experiment verifies the results of the combination. Observation must be is assiduous. Reflection must be profound, and experience must be accurate. "
