“It is youth’s felicity as well as its insufficiency that it can never live in the present, but must always be measuring up the day against its own radiantly imagined future”

“The future promise of any nation can be directly measured by the present prospects of its youth.”

“Sometimes people say that we're living in the future, and time's up for science fiction, but I think that never will be, because science fiction really isn't about the future. It's about change and present-day concerns”

“Respect the past in the full measure of its deserts, but do not make the mistake of confusing it with the present nor seek in it the ideals of the future.”

“Knowing that everything comes to an end is a gift of experience, a consolation gift for knowing that we ourselves are coming to an end. Before we get it we live in a continuous present, and imagine the future as more of that present. Happiness is endless happiness, innocent of its own sure passing. Pain is endless pain.”

“It's hard, to live in the present. Right this minute. We spend most of our time in the past. Or in the future…about half in each. But to live in the present! Hardly anybody can do it.”