“Development of Western science is based on two great achievements: the invention of the formal logical system (in Euclidean geometry) by the Greek philosophers, and the discovery of the possibility of finding out causal relationships by systematic experiment (Renaissance).”
Albert Einstein (verified)
• Title: Letter to J.S. Switzer
• Author: Albert Einstein
• Type: Letter
• Publisher: Einstein Archives 61-381 (Non-Scientific Correspondence-S - Folder III), The Hebrew University of Jerusalem
• Publication time: April 23, 1953
• Link: http://www.albert-einstein.org/archives4.html