“If we ever established contact with intelligent life on another world, there would be barriers to communication. First, they would be many light years away, so signals would take many years to reac...”

“It is foolish to claim, as some do, that emigration into space offers a long-term escape from Earth's problems. Nowhere in our solar system offers an environment even as clement as the Antarctic or...”

“Not even the most secular among us can fail to be uplifted by Christianity's architectural legacy - the great cathedrals. These immense and glorious buildings were erected in an era of constricted ...”

“Maybe the search for life shouldn't restrict attention to planets like Earth. Science fiction writers have other ideas: balloon-like creatures floating in the dense atmospheres of planets such as J...”

“The images of Earth's delicate biosphere, contrasting with the sterile moonscape where the astronauts left their footsteps, have become iconic for environmentalists: these may indeed be the Apollo ...”

“We need to broaden our sympathies both in space and time - and perceive ourselves as part of a long heritage, and stewards for an immense future.”

“Sometimes I feel like we're a knot, too tangled to be taken apart.”

“Memories of lost love they do enpain,Fleeting images of what once was never again to gain.Hold tight those memories that slip through the mind, To walk in those fields again with hera dream divi...”

“As she left the cold arena Angel had to laugh,Beaten by that of a wisp girl and her subliming cunning craft.Jove lay silent in his orbit; brooding, deep, dreamless forweep,And faithful dog Sirius r...”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettie...”

“To know the history of science is to recognize the mortality of any claim to universal truth. ”

“The scientist only imposes two things, namely truth and sincerity, imposes them upon himself and upon other scientists.”

“We kill all the caterpillars, then complain there are no butterflies.”

“Where ignorance is our master, there is no possibility of real peace.”

“You can be used by someone for their aims when you are not aware of your true being”