"Supreme happiness is man’s...if he urges on the steed of high endeavor in the arena of civilization and justice."

Steed-Mounting Wall, Bahjí

"God has given us eyes, that we may look about us at the world, and lay hold of whatsoever will further civilization and the arts of living. He has given us ears, that we may hear and profit by the wisdom of scholars and philosophers and arise to promote and practice it. Senses and faculties have been bestowed upon us, to be devoted to the service of the general good; so that we, distinguished above all other forms of life for perceptiveness and reason, should labor at all times and along all lines, whether the occasion be great or small, ordinary or extraordinary, until all mankind are safely gathered into the impregnable stronghold of knowledge. We should continually be establishing new bases for human happiness and creating and promoting new instrumentalities toward this end. How excellent, how honorable is man if he arises to fulfill his responsibilities; how wretched and contemptible, if he shuts his eyes to the welfare of society and wastes his precious life in pursuing his own selfish interests and personal advantages. Supreme happiness is man’s, and he beholds the signs of God in the world and in the human soul, if he urges on the steed of high endeavor in the arena of civilization and justice."

‘Abdu’l-Bahá, The Secret of Divine Civilization
www.bahai.org/r/574361742

"Is any larger bounty conceivable than this...that an individual...become the cause of peace and well-being, of happiness and advantage to his fellow men?"

House of the Master, 7 Haparsim

"And the honor and distinction of the individual consist in this, that he among all the world’s multitudes should become a source of social good. Is any larger bounty conceivable than this, that an individual, looking within himself, should find that by the confirming grace of God he has become the cause of peace and well-being, of happiness and advantage to his fellow men? No, by the one true God, there is no greater bliss, no more complete delight."

‘Abdu’l-Bahá, The Secret of Divine Civilization
www.bahai.org/r/006593911