"The progressive development of man is vitally dependent on invention. It is the most important product of his creative brain."

"I have toiled ceaselessly for a quarter of a century for the love of science, to benefit humanity."

"The theory of relativity is a mass of errors and deceptive ideas violently opposed to the teachings of the great men of science of the past and even to common sense."

"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."

"The future of humanity lies in the utilization of the sun's energy."