“Happiness lies in dedicating oneself to an idea, the fruits of which are beneficial for others.”
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Zafar Mirzo 149
1972Related quotes

“In order to be happy oneself it is necessary to make at least one other person happy.”

“Happiness is beneficial for the body but it is grief that develops the powers of the mind.”
Le bonheur est salutaire pour le corps, mais c'est le chagrin qui développe les forces de l'esprit.
Source: In Search of Lost Time, Remembrance of Things Past (1913-1927), Vol. VII: The Past Recaptured (1927), Ch. III: "An Afternoon Party at the House of the Princesse de Guermantes"

In a letter to her parents, Worpswede, 10 September 1899; as quoted in Voicing our visions, – Writings by women artists; ed. Mara R. Witzling, Universe New York, 1991, p. 199
1899
All and Everything: Views from the Real World (1973)
Context: The power of changing oneself lies not in the mind, but in the body and the feelings. Unfortunately, however, our body and our feelings are so constituted that they don’t care a jot about anything so long as they are happy. They live for the moment and their memory is short. The mind alone lives for tomorrow. Each has its own merits. The merit of the mind is that it looks ahead. But it is only the other two that can "do."