"The Buddhist discipline or exercise (yoga) as is told by the Buddha consists of two parts, philosophical and practical. The philosophical discipline is to train the mind to absolute idealism and see that the world is Mind, and that there is in reality no becoming such as birth and death, and that no external things really exist; while the practical side is to attain an inner perception by means of supreme wisdom. To be great in the exercise that makes up Bodhisattvahood (mahayagayogin) one has to be an expert in four things (three of which are intellectual and the last one practical): 1) to perceive clearly that this visible world is no more than Mind itself; 2) to abandon the notion that birth, abiding, and passing-away really took place; 3) to look into the nature of things external and realize that they have no reality (abhava); 4) to train oneself towards the realization of the truth in the inmost consciousness by means of supreme wisdom."--Suzuki's Lankavatara Sutra Studies
-- Notebooks Category 20: What Is Philosophy? > Chapter 3 : Its Requirements > # 143
