Alexander Graham Bell — "I have always been a firm believer in the power of hard work and perseverance."

"Don't keep forever on the public road, going only where others have gone, and following the ruts of conventionality. Leave the beaten track occasionally and dive into the woods. Every time you do so, …"

"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 greatest discovery of my life was the discovery of the value of hard work."

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

"I have never seen the slightest scientific proof of the religious theories of the creation of the world, and I do not believe any such proof will be found."