“A diamond is a piece of coal that stuck to the job”

“It is absurd to say that our country can issue $30,000,000 in bonds and not $30,000,000 in currency. Both are promises to pay; but one promise fattens the usurer (banker), and the other helps the people. If the currency issued by the Government were no good, then the bonds issued would be no good either. It is a terrible situation when the Government, to increase the national wealth, must go into debt and submit to ruinous interest charges at the hands of men who control the fictitious values of gold.”

“I know of over 3,000 ways [that] a light bulb does not work.”

“Mr. Edison worked endlessly on a problem, using the method of elimination. If a person asked him if he were discouraged because so many attempts proved unavailing, he would say, "No, I am not discouraged, because every wrong attempt discarded is another step forward.".”

“A good intention, with a bad approach, often leads to a poor result.”

“Let us, like merchants, show our foulest wares,And think perchance they'll sell; if not,The lustre of the better yet to showShall show the better.”

“The greatest meliorator of the world is selfish, huckstering Trade.”

“In finance everything that is agreeable is unsoundand everything that is sound is disagreeable.”

“The very firstlings of my heart shall be The firstlings of my hand.”

“Never make a promise without a plan.”

“There are plenty of good ideas, if only they can be backed with the power of action.”

“Ideas are the very coinage of your brain.”

“It has come to be practically a sort of rule in literature that a man, having once shown himself capable of original writing, is entitled thenceforth to steal from the writings of others at discretion.”

“We are the prisoners of ideas.”

“All life is an experiment. The more experiments you make the better.”

“The Good Spirit never cared for the colleges, and though all men and boys were now drilled in Greek, Latin, and Mathematics, it had quite left these shells high on the beach, and was creating and feeding other matters [science] at other ends of the world.”

“Nature is a rag-merchant, who works up every shred and ort and end into new creations; like a good chemist, whom I found, the other day, in his laboratory, converting his old shirts into pure white sugar.”

“Knowing I lov'd my books, he furnish'd me From mine own library with volumes that I prize above my dukedom.”

“You cannot, sir, take from me any thing that I will more willingly part withal: except my life, except my life, except my life.”

“Rich gifts wax poor when givers prove unkind.”