Each path to knowledge involves different rules and these rules are not interchangeable. Author: Barack Obama Copy Quote More from Barack Obama “Eventually my rejection of authority spilled into self-indulgence and self-dest…” “We hang on to our values, even if they seem at times tarnished and worn; even i…” “I realized that in some unspoken, still tentative way, she and I were already b…” “You could see a man talking to himself as just plain crazy, or read about the c…”