Recurring themes in Cohen's work include love and sex, religion, psychological depression, and music itself. He has also engaged with certain political themes, though sometimes ambiguously so. Love and sexuality are common themes in popular music, yet Cohen's background as a novelist and poet enabled him to bring a darker, deeper edge to these themes. "Suzanne" mixes a wistful type of love song with a religious meditation, themes that are also mixed in "Joan of Arc." "Famous Blue Raincoat" is from the point of view of a man whose marriage has been broken (in exactly what degree is ambiguous in the song) by his wife's infidelity with his close friend, and is written in the form of a letter to that friend, to whom he writes, "I guess that I miss you/ I guess I forgive you … Know your enemy is sleeping/ And his woman is free", while "
Everybody Knows" deals in part with the harsh reality of
AIDS: "… the naked man and woman/ Are just a shining artifact of the past."
"Sisters of Mercy" evokes genuine love found in a hotel room encounter with two
Edmonton women. Some have claimed that "
Chelsea Hotel #2" treats his
Janis Joplin one-night stand rather unsentimentally and others that it reveals a much more complicated and mixed set of feelings than straightforward love. The title of "Don't Go Home with Your Hard-On" speaks for itself.
Cohen comes from a
Jewish background, most obviously reflected in his song "
Story of Isaac", and also in "Who by Fire," whose words and melody echo the
Unetaneh Tokef, an 11th century liturgical poem recited on
Rosh Hashanah. Broader
Judeo-Christian themes are sounded throughout the album
Various Positions: "Hallelujah", which has music as a secondary theme, begins by evoking the biblical king
David composing a song that "pleased the Lord," and continues with references to
Bathsheba and
Samson.
In his early career as a novelist,
Beautiful Losers grappled with the mysticism of the Catholic/Iroquois Catherine Tekakwitha. Cohen has also been involved with
Buddhism at least since the 1970s and in 1996 he was ordained a Buddhist monk. However, he still considers himself also a Jew: "I'm not looking for a new religion. I'm quite happy with the old one, with Judaism."
Having suffered from
psychological depression during much of his life (although less so with the onset of old age), Cohen has written much (especially in his early work) about depression and
suicide. The wife of the protagonist of
Beautiful Losers commits a gory suicide; "Seems So Long Ago, Nancy" is about a suicide; suicide is mentioned in the darkly comic "One of Us Cannot Be Wrong"; "Dress Rehearsal Rag" is about a last-minute decision not to kill oneself; a general atmosphere of depression pervades such songs as "Please Don't Pass Me By" and "Tonight Will Be Fine." As in the aforementioned "Hallelujah", music itself is the subject of many songs, including "Tower of Song", "A Singer Must Die", and "Jazz Police".
Social justice often shows up as a theme in his work, where he seems, especially in later albums, to expound a leftist politics, albeit with culturally conservative elements. In "Democracy" lamenting "the wars against disorder/ … the sirens night and day/ … the fires of the homeless/ … the ashes of the gay," he concludes that the United States is actually not a democracy. This is a specifically (and classically) leftist position, as is his observation (in "Tower of Song") that "the rich have got their channels in the bedrooms of the poor/ And there's a mighty judgment coming." In the title track of
The Future he recasts this prophecy on a pacifist note: "I've seen the nations rise and fall/ …/ But love's the only engine of survival." In "Anthem," he promises that "the killers in high places [who] say their prayers out loud/ … [are] gonna hear from me."
In "The Land of Plenty," he characterizes the United States (if not the opulent West in general) of benightedness: "May the lights in The Land of Plenty/ Shine on the truth some day."
War is an enduring theme of Cohen's work which in his earlier songs, as indeed in his early life, he approached ambivalently. In "Field Commander Cohen" he (perhaps metaphorically) imagines himself as a soldier/spy socializing with
Fidel Castro in
Cuba—where he had actually lived at the height of US–Cuba tensions in 1961—allegedly sporting a
Che Guevara-style beard and military fatigues. This song was actually written immediately following Cohen's front-line stint with the
Israeli air force, the "fighting in Egypt" documented in an (again perhaps metaphorical) passage of "Night Comes On:"
In
1973, Cohen, who had traveled to
Jerusalem to sign up on the Israeli side in the
Yom Kippur War, had instead been assigned to a
USO-style entertainer tour of front-line tank emplacements in the
Sinai Desert, at one of which he both came under fire and reportedly shared cognac with an unlikely self-professed fan, then-General
Ariel Sharon. Disillusioned by encounters with dead and wounded Israeli soldiers, and having expressed ambivalence from the start about the causes of the war, he wrote his song "Lover Lover Lover,", where the ending line is: "May it be a shield for you, a shield against the enemy."
His recent politics continue a lifelong predilection for the underdog, the "beautiful loser." Whether covering "
The Partisan", a
French Resistance song by
Anna Marly and
Emmanuel d'Astier, or singing his own "The Old Revolution", written from the point of view of a defeated royalist, he has throughout his career through his music expressed his sympathy and support for the oppressed. Although Cohen's fascination with war is often as metaphor for more explicitly cultural and personal issues, as in
New Skin for the Old Ceremony, by this measure his most "militant" album.
Cohen blends a good deal of pessimism about political/cultural issues with a great deal of humour and (especially in his later work) gentle acceptance. His wit contends with his stark analyses, as his songs are often verbally playful and even cheerful: In "Tower of Song," the famously raw-voiced Cohen sings
ironically that he was "… born with the gift/ Of a golden voice"; the generally dark "Is This What You Wanted?" nonetheless contains playful lines "You were
the whore at the Feast of
Babylon/ I was
Rin Tin Tin"; in concert, he often plays around with his lyrics (for example, "If you want a doctor/ I'll examine every inch of you" from "I'm Your Man" will become "If you want a Jewish doctor …"); and he will introduce one song by using a phrase from another song or poem (for example, introducing "Leaving Green Sleeves" by paraphrasing his own "Queen Victoria": "This is a song for those who are not nourished by modern love").
Cohen has also covered such love songs as
Irving Berlin's "Always" or the more obscure soul number "Be for Real" (originally sung by
Marlena Shaw), chosen in part for their unlikely juxtaposition to his own work.