Alexander Graham Bell

A Scottish scientist and inventor who was one of the leading developers of the telephone.

He also invented teh metal detector.

(from the Burlington Culture Calendar)

More information:

Wikipedia: here you can have records of his voice.

Alexander Graham Bell refused to have a telephone in his study, fearing it would distract him from his scientific work.

(taken from History page)

Quotations:

When one door closes another door opens; but we so often look so long and so regretfully upon the closed door, that we do not see the ones which open for us.

Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus.

Before anything else, preparation is the key to success.