Know the past Quotes

Enjoy the best quotes on Know the past , Explore, save & share top quotes on Know the past .

If, years later, I do use the slit detector to observe which way the electron went, it will mean that many years earlier the electron must have passed through one slit or the other. But if I don't use the "slit detector," then the electron must have passed through both slits. This is, of course, extremely weird. My actions at the beginning of the twenty-first century can change what happened thousands of years ago when the electron began its journey. It seems that just as there are multiple futures, there are also multiple pasts, and my acts of observation in the present can decide what happened in the past. As much as it challenges any hope of ever really knowing the future, quantum physics asks whether I can ever really know the past. It seems that the past is also in a superposition of possibilities that crystallize only once they are observed.

Marcus du Sautoy
Save QuoteView Quote

I wonder if I talk like a dead man. My daughter once came home from school very excited about some lecture -this was years ago, before I died, though just right before- and she said her English teacher had talked about what the dead sound like in Dante. This funny thing about Dante's dead, which is that they know the past, and even the future, but they don't know the present. About the present they have all these questions for Dante. And that somehow is what being alive is, to be suspended in the time. She seemed to feel that really meant something. That and also that the dead know themselves better than the living do.

Rivka Galchen, Atmospheric Disturbances
Save QuoteView Quote

You have to know the past to understand the present.

Carl Sagan
Save QuoteView Quote

If you would understand the present, you must come to know the past.

Libba Bray, The Sweet Far Thing
Save QuoteView Quote

Through it [literature] we know the past, govern the present, and influence the future.

Charlotte Perkins Gilman, The Man-Made World
Save QuoteView Quote

I read to know the past, I write to express my love for the future.

Debasish Mridha
Save QuoteView Quote

If we know the past, and live the present, it is possible that we dream the future?

Truman Capote, Summer Crossing
Save QuoteView Quote

People don't know the past, even though we live in literate societies, because they don't trust the sources of the past.

Daniel Pauly
Save QuoteView Quote

That was a thing of wolves; they could know the past and the future, yet keep their attention on the hunt. Could he do the same? Allow himself to be consumed when needed, yet keep balance in other parts of his life?

Robert Jordan, Towers of Midnight
Save QuoteView Quote

…everything has a past. Everything – a person, an object, a word, everything. If you don’t know the past, you can’t understand the present and plan properly for the future.

Chaim Potok, Davita's Harp
Save QuoteView Quote