But what is happiness except the simple harmony between a man and the life he leads?
Like everything metaphysical the (pre-established) harmony between thoughts and reality is to be discovered in the grammar of language.[Wie alles Metaphysische ist die (prästabilierte) Harmonie zwischen Gedanken und Wirklichkeit in der Grammatik der Sprache aufzufinden.]
Happiness is when what you think, what you say, and what you do are in harmony.