When one door closes, another one opens.

The most successful men in the end are those whose success is the result of steady accretion.

Grand telegraphic discovery today … Transmitted vocal sounds for the first time ... With some further modification I hope we may be enabled to distinguish … the “timbre” of the sound. Should this be so, conversation viva voce by telegraph will be a fait accompli.

It is the man who carefully advances step by step...who is bound to succeed in the greatest degree.

God has strewn our paths with wonders and we certainly should not go through life with our eyes shut

Washington is no place in which to carry out inventions

I have heard articulate speech produced by sunlight I have heard a ray of the sun laugh and cough and sing! … I have been able to hear a shadow, and I have even perceived by ear the passage of a cloud across the sun's disk.