"Man reacheth perfection through good deeds, voluntarily performed, not through good deeds the doing of which was forced upon him."

Door at Mansion of Mazra'ih

"Man reacheth perfection through good deeds, voluntarily performed, not through good deeds the doing of which was forced upon him. And sharing is a personally chosen righteous act: that is, the rich should extend assistance to the poor, they should expend their substance for the poor, but of their own free will, and not because the poor have gained this end by force. For the harvest of force is turmoil and the ruin of the social order. On the other hand voluntary sharing, the freely chosen expending of one’s substance, leadeth to society’s comfort and peace. It lighteth up the world; it bestoweth honor upon humankind."

‘Abdu’l-Bahá, Selections from the Writings
www.bahai.org/r/408874573

"Material science is the investigation of natural phenomena; divine science is the discovery and realization of spiritual verities."

Mansion of Mazra'ih

"Scientific knowledge is the highest attainment upon the human plane, for science is the discoverer of realities. It is of two kinds: material and spiritual. Material science is the investigation of natural phenomena; divine science is the discovery and realization of spiritual verities. The world of humanity must acquire both. A bird has two wings; it cannot fly with one. Material and spiritual science are the two wings of human uplift and attainment. Both are necessary—one the natural, the other supernatural; one material, the other divine. By the divine we mean the discovery of the mysteries of God, the comprehension of spiritual realities, the wisdom of God, inner significances of the heavenly religions and foundation of the law."

‘Abdu’l-Bahá, The Promulgation of Universal Peace
www.bahai.org/r/988275660

"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

"Without the spirit the world of mankind is lifeless..."

Flowers at the Mansion of Mazra'ih

"Material civilization is like a lamp-glass. Divine civilization is the lamp itself and the glass without the light is dark. Material civilization is like the body. No matter how infinitely graceful, elegant and beautiful it may be, it is dead. Divine civilization is like the spirit, and the body gets its life from the spirit, otherwise it becomes a corpse. It has thus been made evident that the world of mankind is in need of the breaths of the Holy Spirit. Without the spirit the world of mankind is lifeless, and without this light the world of mankind is in utter darkness."

‘Abdu’l-Bahá, Selections from the Writings
www.bahai.org/r/916728220

"To every discerning and illumined heart it is evident that God... is immensely exalted beyond every human attribute..."

Prison of ‘Akká

"To every discerning and illumined heart it is evident that God, the unknowable Essence, the divine Being, is immensely exalted beyond every human attribute, such as corporeal existence, ascent and descent, egress and regress. Far be it from His glory that human tongue should adequately recount His praise, or that human heart comprehend His fathomless mystery. He is and hath ever been veiled in the ancient eternity of His Essence, and will remain in His Reality everlastingly hidden from the sight of men."

Bahá’u’lláh, The Kitáb-i-Íqán
www.bahai.org/r/647258180

"Cleanse the mirrors of your hearts from the dross of the world...that they may reflect the resplendent light of God."

"The world will pass away, and so will all the things whereat your hearts rejoice, or wherein ye pride yourselves before men. Cleanse the mirrors of your hearts from the dross of the world and all that is therein, that they may reflect the resplendent light of God. This, indeed, shall enable you to dispense with all save God, and to attain unto the good pleasure of your Lord, the Most Bountiful, the All-Knowing, the All-Wise. We, verily, have unfolded before your eyes that which shall profit you both in this world and in the realm of faith, and which will lead you to the path of salvation. Would that ye might turn thereunto!"

Bahá’u’lláh, The Summons of the Lord of Hosts
www.bahai.org/r/939823972