"I am a believer in unconscious cerebration. The brain is working all the time, though we do not know it. At night it follows up what we think in the daytime. When I have worked a long time on one thin…"

"What this power is I cannot say; all I know is that it exists and it becomes available only when a man is in that state of mind in which he knows exactly what he wants and is fully determined not to g…"

"The telephone will revolutionize communication."

"The achievement of one goal should be the starting point of another."

"I am a man of science, and I believe in the power of observation and experimentation."