
“The saddest people I've met in my life are the ones who don't care deeply about anything at all.”
Upon completing his spacewalk and returning to the Gemini 4 capsule. "Composite Air-to-ground and Onboard Voice Tape Transcription of the GT-4 Mission (U)" http://www.jsc.nasa.gov/history/mission_trans/GT04_TEC.PDF, NASA, August 31, 1965, p. 3
“The saddest people I've met in my life are the ones who don't care deeply about anything at all.”
“One of the saddest things in life, is the things one remembers.”
Isaac Asimov's Book of Science and Nature Quotations (1988), edited with Jason A. Shulman, p. 281
General sources
“In its last moment, the whole of my life will last only a moment.”
En último instante, toda mi vida durará un instante.
Voces (1943)
As quoted in Christian Jazz Artists Newsletter (February/March 2005) http://www.songsofdavid.com/CJAFebMarch2005.htm; this source is disputed as it does not cite an original document for the quote.
Disputed
As quoted in "Former President Bush and wife Laura visit Africa to promote initiative to fight cervical, breast cancer" https://web.archive.org/web/20130522023945/http://www.nydailynews.com/news/world/bushes-visit-africa-promote-initiative-fight-cervical-breast-cancer-article-1.1109613 (22 May 2013), by Meghan Neal, New York Daily News.
2010s, 2013
“I could but esteem this moment of my departure as among the most happy of my life.”
August 9, 1965, when Lee announced the separation of Singapore from Malaysia, as quoted in The Theatre and the State in Singapore: Orthodoxy and Resistance, Terence Chong
1960s
“My heart is empty & my life has no value anymore. Each moment a thousand tears.”
Source: Peony in Love