If you want to build a ship, don’t drum up the men to gather wood, divide the work and give orders. Instead, teach them to yearn for the vast and endless sea. by Antoine Saint-Exupéry
French original: Quand tu veux construire un bateau, ne commence pas par rassembler du bois, couper des planches et distribuer du travail, mais reveille au sein des hommes le desir de la mer grande et large.
When this quote is used is mostly attributed to Saint-Exupéry althougth it has probably been taken as unsourced quote from book it only Willful Volunteer.