„Life isn't long enough for love and art.“

„One life isn't enough“

—  Richard Russo American novelist, short story writer and screenwriter 1949

„Art isn't meaningless… It is in itself. It isn't in that it tries to make life less so.“

—  F. Scott Fitzgerald, book The Beautiful and Damned

Source: The Beautiful and Damned

„In art as in love, instinct is enough.“

—  Anatole France French writer 1844 - 1924

En art comme en amour, l'instinct suffit.
Le Jardin d'Épicure [The Garden of Epicurus] (1894)

„time is a tree (this life one leaf)
but love is the sky and i am for you
just so long and long enough“

—  E.E. Cummings American poet 1894 - 1962

„Why do we think that arts are leisure? Why isn't it arts and science or arts and the most important thing in your life?“

—  Julie Taymor American film and theatre director 1952

Bill Moyers interview (2002)
Context: I used to say that arts were talked about in the arts and leisure page. Now, why would it be arts and leisure? Why do we think that arts are leisure? Why isn't it arts and science or arts and the most important thing in your life? I think that art has become a big scarlet letter in our culture.
It's a big "A." And it says, you are an elitist, you're effete, or whatever those things... do you know what I mean? It means you don't connect. And I don't believe that. I think we've patronized our audiences long enough.
You can do things that would bring people to another place and still get someone on a very daily mundane moving level but you don't have to separate art from the masses.

„Perhaps woman's art is of woman's life a thing apart, 'tis man's whole existence; just as love is said to be the reverse — though it isn't.“

—  George Bernard Shaw Irish playwright 1856 - 1950

1900s, Love Among the Artists (1900)

„Love isn't just a feeling. It's an art. And like any art, it takes not only inspiration but also a lot of work.“

—  Paulo Coelho, book Adultery

Source: Adultery

„Love isn't an act, it's a whole life.“

—  Brian Moore British rugby player, referee, commentator 1962

„Art is long, life is short.“

—  Horace Roman lyric poet -65 - -8 BC

Seneca's (De Brevitate Vitae, 1.1) Latin translation of the Greek by Hippocrates.
Misattributed
Original: (la) Ars longa, vita brevis.

„Life isn't a support system for art. It's the other way around.“

—  Stephen King American author 1947

„Music isn't enough. Performers aren't enough. There must be someone that loves music as much as life. For you, and remember this always, those of us with something urgent to say, we give everything.“

—  William Kapell American classical pianist 1922 - 1953

Quoted by Claudia Cassidy, " In Memory of William Kapell, Who Left Us Richer in Music http://www.williamkapell.com/articles/cassidy.html", Chicago Tribune (October 30, 1953).

„If life were enough for vitality, there would be no art.“

—  Tarik Gunersel Turkish actor 1953

Oluşmak (To Become) Aphorisms (Pan Publishing House, Istanbul, 2011)

„Life is not long at all, never long enough, but days are very long indeed.“

—  Martha Gellhorn journalist from the United States 1908 - 1998

„Art indeed is long, but life is short.“

—  Andrew Marvell English metaphysical poet and politician 1621 - 1678

Upon the Death of Lord Hastings (1649), last line
Variant: "Art is long, and time is fleeting." Henry Wadsworth Longfellow, A Psalm of Life (1839).

„I loved him, but love isn't enough. All the fairy tales, the romance novels, the soap operas; they're all lies. Love does not conquer all.“

—  Laurell K. Hamilton, book The Lunatic Cafe

Source: The Lunatic Cafe

„…life is lonely, life is empty. Love isn't everything. A dear true friend is more than love--the serge outlasts the silk.“

—  Clifford Odets Playwright, screenwriter, director, actor 1906 - 1963

„Last year I wrote: 'the intensity with which a subject is grasped, that is what makes for beauty in art'. Isn't it also true for love?“

—  Paula Modersohn-Becker German artist 1876 - 1907

excerpt of her Journal, Worpswede 1899; as quoted in Voicing our visions, – Writings by women artists; ed. Mara R. Witzling, Universe New York, 1991
1899

„I love you anyway-even if there isn't any me or any love or even any life-
I love you.“

—  Zelda Fitzgerald Novelist, wife of F. Scott Fitzgerald 1900 - 1948

Variant: I love you, even if there isn’t any me, or any love, or even any life. I love you.
Source: Dear Scott, Dearest Zelda: The Love Letters of F. Scott and Zelda Fitzgerald

„The object isn't to make art, it's to be in that wonderful state which makes art inevitable.“

—  Robert Henri American painter 1865 - 1929