“On considering these instances it is indubitably clear that sati has a crucial role to fulfill in the realm of samatha. This might be why the Cūḷavedalla Sutta speaks of satipaṭṭhāna as the "cause" of concentration (samādhinimitta)....On the other hand, however, to consider satipaṭṭhāna purely as a concentration exercise goes too far and misses the important difference between what can become a basis for the development of concentration and what belongs to the realm of calmness meditation proper. In fact, the characteristic functions of sati and concentration (samādhi) are quite distinct. While concentration corresponds to an enhancement of the selective function of the mind, by way of restricting the breadth of attention, sati on its own represents an enhancement of the recollective function, by way of expanding the breadth of attention. These two modes of mental functioning correspond to two different cortical control mechanisms in the brain. This difference, however, does not imply that the two are incompatible, since during absorption attainment both are present. But during absorption sati becomes mainly presence of the mind, when it to some extent loses its natural breadth owing to the strong focusing power of concentration.”

“The advantages of developing absorption concentration are not only that it provides a stable and receptive state of mind for the practice of insight meditation. The experience of absorption is one of intense pleasure and happiness, brought about by purely mental means, which thereby automatically eclipses any pleasure arising in dependence on material objects. Thus absorption functions as a powerful antidote to sensual desires by divesting them of their former attraction.”

“How is it possible for me to be so miserable and embarrassed and humiliated and beaten an function still talk and smile and concentrate?”

“Function and man appear synonymous because the function can only be pointed toward by being the function. There is no being except in a mode of being. [...] Both scholar and Christian are functioning in identical ways, just under different metaphor, and both are evading the mechanics of being.”

“Our minds tell us, and history confirms, that the great threat to freedom is the concentration of power. Government is necessary to preserve our freedom, it is an instrument through which we can exercise our freedom; yet by concentrating power in political hands, it is also a threat to freedom. Even though the men who wield this power initially be of good will and even though they be not corrupted by the power they exercise, the power will both attract and form men of a different stamp.”

“The principal difference between love and hate is that love is an irradiation, and hate is a concentration. Love makes everything lovely; hate concentrates itself on the object of its hatred. All the fearful counterfeits of love — possessiveness, lust, vanity, jealousy — are closer to hate: they concentrate on the object, guard it, suck it dry.”