Don't keep forever on the public road, going only where others have gone. Leave the beaten track occasionally and dive into the woods. You will be certain to find something you have never seen before. Of course it will be a little thing, but do not ignore it. One discovery will lead to another, and before you know it, you will have something worth thinking about to occupy your mind, and really big discoveries are the result of thought.
Alexander Graham BellThe great advantage [the telephone] possesses over every other form of electrical apparatus consists in the fact that it requires no skill to operate the instrument.
Alexander Graham BellSometimes we stare so long at a door that is closing that we see too late the one that is open.
Alexander Graham BellWhen one door closes, another opens; but we often look so long and so regretfully upon the closed door that we do not see the one which has opened for us.
Alexander Graham Bell