“Music is enough for a lifetime, but a lifetime is not enough for music.”
“So much working, reading, thinking, living to do! A lifetime is not long enough.”
Source: The Unabridged Journals of Sylvia Plath
“We live only a few conscious decades, and we fret ourselves enough for several lifetimes.”
Source: Hitch-22: A Memoir
“The Day Before the Revolution” p. 270 (originally published in Galaxy, August 1974)
Short fiction, The Wind’s Twelve Quarters (1975)
“For one who has not lived even a single lifetime, you are a wise man, Van Helsing.”
Dracula, to Van Helsing, who has discovered his secret
Dracula (1931)
Source: The Rise of Endymion (1997), Chapter 33 (p. 684)
“If your life's work can be accomplished in your lifetime, you're not thinking big enough.”
“If "thank you" is the only prayer you can utter in your lifetime, that would be enough.”
Very commonly attributed to Eckhart on the internet and some publications, the source of the first formulation however is: A Bucket of Surprises (2002) by J. John and Mark Stibbe.
Disputed
