Study The Past If You Would Define The Future

"“The time will come when diligent research over long periods will bring to light things which now lie hidden. A single lifetime, even though entirely devoted to the sky, would not be enough for the investigation of so vast a subject... And so this knowledge will be unfolded only through long successive ages. There will come a time when our descendants will be amazed that we did not know things that are so plain to them... Many discoveries are reserved for ages still to come, when memory of us will have been effaced.”"

"Look back over the past, with its changing empires that rose and fell, and you can foresee the future, too."

"Confine yourself to the present."

"Life is a preparation for the future; and the best preparation for the future is to live as if there were none."

"Now he has departed from this strange world a little ahead of me. That means nothing. People like us, who believe in physics, know that the distinction between past, present, and future is only a stubbornly persistent illusion."

"The universe is change; life is understanding."