"Sisu is a key word in Finnish. It means dogged determination, strength of character or just plain guts. Few nations have battled against such a harsh climate and, at times, against such overwhelming odds as successfully as the Finns; they have pulled themselves up by their own bootstraps, and today, their average income per head ... is among the world's 10 highest" (Chislett, 1996).
The concept of sisu arises even when describing the Finnish education system.
Here is another definition:
"Sisu is a unique Finnish concept. It stands for the philosophy that what must be done will be done, regardless what it takes. Sisu is a special strength and persistent determination and resolve to continue and overcome in the moment of adversity ... an almost magical quality, a combination of stamina, perseverance, courage, and determination held in reserve for hard times." (www.sisugrp.com)
