“When he laughed, respectable senators burst with laughter,
And when he cried the little children died in the streets.”

Source: Dracula (1897), Chapter XIV, Dr. Seward's Diary entry for 22 September
Context: Van Helsing and I came on here. The moment we were alone in the carriage he gave way to a regular fit of hysterics. He has denied to me since that it was hysterics, and insisted that it was only his sense of humour asserting itself under very terrible conditions. He laughed till he cried, and I had to draw down the blinds lest any one should see us and misjudge; and then he cried, till he laughed again; and laughed and cried together, just as a woman does. I tried to be stern with him, as one is to a woman under the circumstances; but it had no effect. Men and women are so different in manifestations of nervous strength or weakness! Then when his face grew grave and stern again I asked him why his mirth, and why at such a time. His reply was in a way characteristic of him, for it was logical and forceful and mysterious. He said:—
“Ah, you don't comprehend, friend John. Do not think that I am not sad, though I laugh. See, I have cried even when the laugh did choke me. But no more think that I am all sorry when I cry, for the laugh he come just the same. Keep it always with you that laughter who knock at your door and say, ‘May I come in?’ is not the true laughter. No! he is a king, and he come when and how he like. He ask no person; he choose no time of suitability. He say, ‘I am here.’ Behold, in example I grieve my heart out for that so sweet young girl; I give my blood for her, though I am old and worn; I give my time, my skill, my sleep; I let my other sufferers want that so she may have all. And yet I can laugh at her very grave — laugh when the clay from the spade of the sexton drop upon her coffin and say ‘Thud, thud!’ to my heart, till it send back the blood from my cheek. My heart bleed for that poor boy — that dear boy, so of the age of mine own boy had I been so blessed that he live, and with his hair and eyes the same. There, you know now why I love him so. And yet when he say things that touch my husband-heart to the quick, and make my father-heart yearn to him as to no other man — not even you, friend John, for we are more level in experiences than father and son — yet even at such a moment King Laugh he come to me and shout and bellow in my ear, ‘Here I am! here I am!’ till the blood come dance back and bring some of the sunshine that he carry with him to my cheek. Oh, friend John, it is a strange world, a sad world, a world full of miseries, and woes, and troubles; and yet when King Laugh come, he make them all dance to the tune he play. Bleeding hearts, and dry bones of the churchyard, and tears that burn as they fall — all dance together to the music that he make with that smileless mouth of him. And believe me, friend John, that he is good to come, and kind. Ah, we men and women are like ropes drawn tight with strain that pull us different ways. Then tears come; and, like the rain on the ropes, they brace us up, until perhaps the strain become too great, and we break. But King Laugh he come like the sunshine, and he ease off the strain again; and we bear to go on with our labour, what it may be.”

Christ, Old Student in a New School (1972)
Context: That so much time was wasted in this pain.
Ten thousand years ago he might have let off down
To not return again!
A dreadful laugh at last escapes his lips;
The laughter sets him free.
A Fool lives in the Universe! he cries.
The Fool is me!
And with one final shake of laughter
Breaks his bonds.
The nails fall skittering to marble floors.
And Christ, knelt at the rail, sees miracle
As Man steps down in amiable wisdom
To give himself what no one else can give:
His liberty.

Source: The Hound of the Baskervilles

Source: East of Eden

Source: Saving Francesca

Source: Nights at the Circus

1990s, Radical Thought (1994)

Song Knocked 'em in the Old Kent Road https://web.archive.org/web/20090315082451/http://www.asklyrics.com/display/Temple_Shirley/Knocked_%60Em_In_the_Old_Kent_Road_(Wot%60_Cher!)_Lyrics/72123.htm.

Neuromancer (1984)