How we cite our quotes: (Record.Paragraph)
Quote #1
Like all the other Numbers, I heard now only the senseless disorderly crackling of the chords. I laughed; I felt so light and simple." (4.11)
Happiness is defined by conformity here. The simple act of belonging to the State and its plans is enough to make D-503 happy. But the very fact that it leaves for a moment suggests that it's not permanent.
Quote #2
Accordingly the 0.2 which survived have enjoyed the greatest happiness in the bosom of the United State. But is it not clear that supreme bliss and envy are only the numerator and the denominator, respectively, of the same fraction, happiness? (5.3)
Here, happiness is being used to justify genocide: the vast majority of people wiped out so that the remaining tiny fraction could be happy. Way to go guys; we hope you chock on it!
Quote #3
"I continue to believe that I shall recover, that I may recover. I slept very well. No dreams or any other symptoms of disease." 12.1
Dreams here are seen as the antithesis of happiness: dreams are scary and leave troubled thoughts behind. So too is individuality, which in this book is like a disease that needs to be wiped out.