“We have to be prepared for change.”
Source: The Alchemist
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Paulo Coelho 844
Brazilian lyricist and novelist 1947Related quotes

“If we fail to prepare, we prepare to fail.”
Fail to prepare; prepare to fail.
By failing to prepare, you are preparing to fail.
Attributed to Franklin in Julita Agustin-Israel, Lakas ng Loob, 1996, p. 53 https://books.google.com/books?id=2Z59AAAAMAAJ&q=prepare; there is no evidence that he coined any forms of this quote.
Misattributed

Astronomical Observations relating to the Construction of the Heavens... (1811)
Context: I compared also the present appearance of this nebula with the delineation which Huyghens has given of it in his Systema Saturnium... The changes that are thus proved to have already happened, prepare us for those that may be expected hereafter to take place, by the gradual condensation of the nebulous matter; for had we no where an instance of any alteration in the appearance of nebula, they might be looked upon as permanent celestial bodies, and the successive changes, to which by the action of an attracting principle they have been conceived to be subject, might be rejected as being unsupported by observation.<!-- p. 324

“We have hitherto but hunted deer; if we engage in this war, we must prepare to fight tigers.”
Quoted in p. 460 in Prinsep, Henry Thoby (1825). History of the political and military transactions in India during the administration of the Marquess of Hastings, 1813-1823, Vol 1. London: Kingsbury, Parbury & Allen. https://books.google.com/books?id=Tq1jAAAAMAAJ&source=gbs_navlinks_s
Quote
Context: They will not rest satisfied without establishing their own power and authority, and will unite with the hill rajas, whom we have dispossessed. We have hitherto but hunted deer; if we engage in this war, we must prepare to fight tigers.
Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 121.

“If you have not noticed, we are preparing for war. I’m sorry if that inconveniences you.”
Source: Memory, Sorrow, and Thorn, The Dragonbone Chair (1988), Chapter 34, “Forgotten Swords” (p. 549).

“We have to always look ahead enough moves to be well prepared, even for victory!”
Part III, Epilogue, p. 204
2000s, How Life Imitates Chess (2007)

2010s, 2016, August, Speech at rally in Wilmington, North Carolina (August 9, 2016)

Remarks by President Obama at the 70th Anniversary of D-Day at Normandy American Cemetery and Memorial, Omaha Beach, Normandy, France at June 6, 2014 http://www.whitehouse.gov/the-press-office/2014/06/06/remarks-president-obama-70th-anniversary-d-day-omaha-beach-normandy
2014