ratikanta1968 quote: “The laughter knows the depth of his own sorrows but never tears.”

Khalil Gibran (1883–1931) Lebanese artist, poet, and writer

A Handful of Sand on the Shore

Cassandra Clare The Bane Chronicles

Source: The Bane Chronicles

Sherman Alexie book The Absolutely True Diary of a Part-Time Indian

Source: The Absolutely True Diary of a Part-Time Indian

Mark Twain (1835–1910) American author and humorist

Variant: The secret source of humor is not joy but sorrow; there is no humor in heaven.

Edgar Guest (1881–1959) American writer

Source: A Heap o' Livin' (1916), A Song, opening lines, p. 34.

Amy Tan The Joy Luck Club

Source: The Joy Luck Club

Jerome K. Jerome book Idle Thoughts of an Idle Fellow

Idle Thoughts of an Idle Fellow (1886)

James Thurber (1894–1961) American cartoonist, author, journalist, playwright

New York Times Magazine (7 December 1958).
Letters and interviews

Alfred, Lord Tennyson Tears, Idle Tears

St. 1
Tears, Idle Tears (1850)

Bion of Borysthenes (-325–-246 BC) ancient greek philosopher

As quoted by Cicero, Tusculan Disputations, iii. 26

“The laughter knows the depth of his own sorrows but never tears.”