“I have here only made a nosegay of culled flowers, and have brought nothing of my own but the thread that ties them together.”
Book III, Ch. 12. Of Physiognomy
Essais (1595), Bartlett's Familiar Quotations, 10th ed. (1919)
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Michel De Montaigne 264
(1533-1592) French-Occitan author, humanistic philosopher, … 1533–1592Related quotes

“Invisible threads are the strongest ties.”

Speech in Frankfurt (3 March 1933), as quoted in Gestapo : Instrument of Tyranny (1956) by Edward Crankshaw, p. 48

“A flower may fade before 'tis noon,
And I this day may lose my breath.”
Song 13: "The Danger of Delay".
1710s, Divine Songs Attempted in the Easy Language of Children (1715)

Bk. II, No. 13, I Have Loved Flowers That Fade http://www.poetry-online.org/bridges_i_have_loved_flowers_that_fade.htm, st. 1 (1879).
Shorter Poems (1879-1893)

Speech in Toronto (16 August 1929), quoted in Martin Gilbert, The Churchill Documents, Volume 12: The Wilderness Years, 1929–1935 (Michigan: Hillsdale Press, 2012), p. 51
Early career years (1898–1929)