August 25

Some of the creatures of existence can live solitary and alone. A tree, for instance, may live without the assistance and cooperation of other trees. Some animals are isolated and lead a separate existence away from their kind. But this is impossible for man. In his life and being cooperation and association are essential. Through association and meeting we find happiness and development, individual and collective. 
- ‘Abdu’l-Baha  (From a talk, Washington DC, 20 April 1912; ‘The Promulgation of Universal Peace: Talks Delivered by 'Abdu'l-Bahá during His Visit to the United States and Canada in 1912’)