"Selfless dedication" means giving all your effort and focus towards a goal or helping others without thinking about your own personal gain or benefit. Full definition
I suspect that the rigors and selfless dedication of a career in climatology are not for you. (climateaudit.org)
The party, he continues, teaches that «certain individual revolutionaries emerge as a concentration of this process, and themselves become a concentrated expression of the best qualities of revolutionary leadership» including a selfless dedication to the revolutionary cause and deep love of the masses, as well as a strong grasp of the scientific methodology needed to unleash the masses and chart the path of revolution in line with their objective interests.» (firstthings.com)
There's that selfless dedication and commitment shining through again. (sportstarsmag.com)