“Satori may be defined as an intuitive looking into the nature of things in contradistinction to the analytical or logical understanding of it. Practically, it means the unfolding of a new world hitherto unperceived in the confusion of the dualistically-trained mind. Or we may say that with satori our entire surroundings are viewed from quite an unexpected angle of perception. Whatever this is, the world for those who have gained a satori is no more the old world as it used to be; even with all its flowering streams and burning fires, it is never the same once again. Logically stated, all its opposites and contradictions are united and harmonized into a consistent organic whole...Its semblance or analogy in a more or less feeble and fragmented way is gained when a difficult mathematical problem is solved, or when a great discovery is made, or when a sudden means of escape is realized in the midst of most desperate complications; in short, when one exclaims ‘Eureka! Eureka!’”
“But this refers only to the intellectual aspect of satori, which is therefore necessarily partial and incomplete and does not touch the very foundations of life considered one indivisible whole. Satori as the Zen experience must be concerned with the entirety of life. For what Zen proposes to do is the revolution, and the revaluation as well, of oneself as a spiritual unity. The solving of a mathematical problem ends with the solution, it does not affect one’s whole life. So with all other particular questions, practical or scientific, they do not enter the basic life-tone of the individual concerned. But the opening of satori is the remaking of life itself. When it is genuine – for there are many simulacra of it – its effects on one’s moral and spiritual life are revolutionary…”
“This is a mystery and a miracle, but according to the Zen masters such is being performed every day. Satori can thus be had only through our once personally experiencing it.”