This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...but in the nature of the pleasure they will experience.
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The emotional quality of the pleasure experienced by the four men described above, for instance, is not the same. The qualit
y of any pleasure depends on the mental processes that give rise to and attend it, and on the nature of the values involved. The pleasure of using one’s consciousness properly, and the “plea
sure” of being unconscious, are not the same — just as the pleasure of achieving real values, of gaining an authentic sense of efficacy, and the “pleasure” of temporarily diminishing one...