Danh ngôn của Alexander Graham Bell (Sứ mệnh: 1)

Before anything else, preparation is the key to success.
America is a country of inventors, and the greatest of inventors are the newspaper men.
Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus.
The most successful men in the end are those whose success is the result of steady accretion.
Great discoveries and improvements invariably involve the cooperation of many minds. I may be given credit for having blazed the trail, but when I look at the subsequent developments I feel the credit is due to others rather than to myself.
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 quit until he finds it.
I have discovered that my interest in my dear pupil, Mabel, has ripened into a far deeper feeling than that of mere friendship. In fact, I know that I have learned to love her very sincerely.
From my earliest childhood, my attention was specially directed to the subject of acoustics, and specially to the subject of speech, and I was urged by my father to study everything relating to these subjects, as they would have an important bearing upon what was to be my professional work.
My knowledge of electrical subjects was not acquired in a methodical manner but was picked up from such books as I could get hold of and from such experiments as I could make with my own hands.
It is hardly an exaggeration to say that oral teachers and sign teachers found it difficult to sit down in the same room without quarreling, and there was intolerance upon both sides. To say 'oral method' to a sign teacher was like waving a red flag in the face of a bull, and to say 'sign language' to an oralist aroused the deepest resentment.
It is not, of course, complete yet - but some sentences were understood this afternoon... I feel that I have at last struck the solution of a great problem - and the day is coming when telegraph wires will be laid onto houses just like water or gas - and friends converse with each other without leaving home.
I do not recognize the right of the public to break in the front door of a man's private life in order to satisfy the gaze of the curious... I do not think it right to dissect living men even for the advancement of science. So far as I am concerned, I prefer a post mortem examination to vivisection without anaesthetics.
Educate the masses, elevate their standard of intelligence, and you will certainly have a successful nation.