From the movie Contact.
The skeptical scientist Dr. Ellie Arroway, played by Jodie Foster, researches extraterrestrial life with her team in Puerto Rico. When David Drumlin shuts-down the project, Ellie seeks for private funds to reopen her research in New Mexico. An anonymous millionaire provides the necessary funds and Ellie proceeds with her work. Four years later, she is contacted by alien forms from Vega that send a coded message. The millionaire S.R. Hadden that is financing the research deciphers the message and gives to Ellie the design of an intriguing machine. Ellie concludes that the equipment might be to transport a passenger to Vega. Now she needs to convince a commission formed by military, politicians, scientists and religious leaders that she is the best candidate for the journey.
Ellie Arroway: Because I can’t. I… had an experience… I can’t prove it, I can’t even explain it, but everything that I know as a human being, everything that I am tells me that it was real! I was given something wonderful, something that changed me forever… A vision… of the universe, that tells us, undeniably, how tiny, and insignificant and how… rare, and precious we all are! A vision that tells us that we belong to something that is greater then ourselves, that we are *not*, that none of us are alone! I wish… I… could share that… I wish, that everyone, if only for one… moment, could feel… that awe, and humility, and hope. But… That continues to be my wish.
The remark made throughout the movie by different characters that if humans were the only life in the universe it would “be a terrible waste of space” is a famous quote by author Carl Sagan who wrote this story.