„The mass of a body is a measure of its energy content.“

— Albert Einstein
„Hata yoga is a way of working with the body, disciplining the body, purifying the body, preparing the body for higher levels of energy.“
— Sadhguru
„You must act with all energy. Mass searches. Execution for concealing arms.“
— Vladimir Lenin
„Lasting peace is sought, it is essential to adopt international measures to improve the lot of the masses.“
— Мустафа Кемаль Ататюрк
„The revolution in scientific ideas just mentioned is primarily logical. It is due to recognition that the very method of physical science, with its primary standard units of mass, space, and time, is concerned with measurements of relations of change, not with individuals as such.“
— John Dewey