Contrary to traditional belief, entrepreneurism is not just about making money, nor is it merely about starting up a venture or owning a small business - it is a way of life, applicable to all human economic activities. Living on a planet with finite resources, humanity is sustainable only if there is constant pursuit of innovation and creativity, not just for personal gain but also for the common good. This text offers concise definitions of "entrepreneurism", "entrepreneurship", "entrepreneur" and "entrepreneurial" for education and application within the framework of the market economy. It acts as a signpost pointing the way toward balancing the short-term need for survival with the long-term need for sustainable growth, and seeks to serve as a philosophical beacon that should guide individuals, particularly business leaders, toward actions in the interest of humanity.