Regular

“Day after day I have asked myself "what is electricity?” and found no answer. Eighty years have gone by since that time and I still ask the same question, unable to answer it. Some pseudo-scientist, of whom there are only too many, may tell you that he can, but do not believe him. If any of them know what it is, I would also know, and my chances are better than any of them, for my laboratory work and practical experience are more extensive, and my life covers three generations of scientific research.“

–Nikola Tesla

"A Story of Youth Told by Age. Dedicated to Miss Pola Fotitch.” By Nikola Tesla. Hotel New Yorker, 1939.