David Krofcheck

“There are only certain intervals of time when life of any sort is possible in an expanding universe and we can practise astronomy only during that habitable time interval in cosmic history.”
― John D. Barrow, The Book of Universes: Exploring the Limits of the Cosmos

“Gentlemen, we have run out of money. It's time to start thinking.”
― Ernest Rutherford

“We are made of the same stardust of which all things are made, and when we are immersed in suffering or when we are experiencing intense joy we are being nothing other than what we can’t help but be: a part of our world.”
― Carlo Rovelli, Seven Brief Lessons on Physics

“Time present and time past
Are both perhaps present in time future
And time future contained in time past.”
― T.S. Eliot, Four Quartets