Science fiction is the literature of ideas that fire the imagination and move the mind.
The true sign of intelligence is not knowledge but imagination.
The most beautiful experience we can have is the mysterious. It is the fundamental emotion that stands at the cradle of true art and true science.
Science fiction encourages us to explore... all the futures, good and bad, that the human mind can envision.
It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.
To confine our attention to terrestrial matters would be to limit the human spirit.
The great scientific achievements are research programs rather than individual insights.
Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.
There is nothing like a dream to create the future.
The only limit to your impact is your imagination and commitment.
Science fiction is no more written for scientists than ghost stories are written for ghosts.
The saddest aspect of life right now is that science fiction gathers knowledge faster than society gathers wisdom.
The universe is a pretty big place. If it's just us, seems like an awful waste of space.
The only limit to our realization of tomorrow will be our doubts of today.
Time is an illusion, lunchtime doubly so.
Imagination will often carry us to worlds that never were. But without it, we go nowhere.
We are all fools in love.
Science fiction, outside of poetry, is the only literary field which has no limits, no parameters whatsoever.