The third, revised edition of "Knowledge about Meditation": Among all major world religions, Buddhism stands out in that the experience of lasting happiness is not left to pure faith, but can be realized through deep insight into the nature of the mind. Meditation in Buddhism serves the function of transforming what is understood through learning and reflection into an experience. The goal of Buddha's teachings is the full development of our inherent abilities of body, speech, and mind. The practice of meditation helps us discover and cultivate our inner wealth for the benefit of all beings. "Knowledge about Meditation" is divided into four sections: 1. First, the foundations and goals of meditation in Buddhism are presented and compared with other systems; 2. The second section provides an overview of the most important aspects.