"It is paradoxical, yet true, to say, that the more we know, the more ignorant we become in the absolute sense, for it is only through enlightenment that we become conscious of our limitations. Precise…"

"I would give a thousand secrets of nature upon which I stumbled by accident, in exchange for this one which I extracted from nature, in spite of all the miracles and dangers which I faced."

"I have been so absorbed in my work that I have neglected my personal life."

"Money does not represent such a value as man has placed in it. All my money I invested in inventions which enabled new inventions enabling an easier life for humanity."

"I have been feeding pigeons, thousands of them, for years. But there was one, a beautiful bird, pure white with light grey tips on its wings; that one was different."