“Fear not,” the Báb’s indomitable Spirit replied: “I am come into this world to bear witness to the glory of sacrifice. You are aware of the intensity of My longing; you realize the degree of My renunciation. Nay, beseech the Lord your God to hasten the hour of My martyrdom and to accept My sacrifice. Rejoice, for both I and Quddús will be slain on the altar of our devotion to the King of Glory. The blood which we are destined to shed in His path will water and revive the garden of our immortal felicity. The drops of this consecrated blood will be the seed out of which will arise the mighty Tree of God, the Tree that will gather beneath its all-embracing shadow the peoples and kindreds of the earth. Grieve not, therefore, if I depart from this land, for I am hastening to fulfil My destiny.” (Dawnbreakers, chapter VII, p. 140-1)
Whosoever and whatsoever meeting becometh a hindrance to the diffusion of the Light of Faith, let the loved ones give them counsel and say: “Of all the gifts of God the greatest is the gift of Teaching. It draweth unto us the Grace of God and is our first obligation. Of such a gift how can we deprive ourselves? Nay, our lives, our goods, our comforts, our rest, we offer them all as a sacrifice for the Abha Beauty and teach the Cause of God.” Caution and prudence, however, must be observed even as recorded in the Book. The veil must in no wise be suddenly rent asunder. The Glory of Glories rest upon you.
— ‘Abdu’l-Baha, The Baha’i World Faith.  1976: 448-449
“Rid thou thyself of all attachments to aught except God, enrich thyself in God by dispensing with all else besides Him, and recite this prayer:
Say: God sufficeth all things above all things, and nothing in the heavens or in the earth or in whatever lieth between them but God, thy Lord, sufficeth. Verily, He is in Himself the Knower, the Sustainer, the Omnipotent.
Regard not the all-sufficing power of God as an idle fancy. It is that genuine faith which thou cherishest for the Manifestation of God in every Dispensation. It is such faith which sufficeth above all the things that exist on the earth, whereas no created thing on earth besides faith would suffice thee. If thou art not a believer, the Tree of divine Truth would condemn thee to extinction. If thou art a believer, thy faith shall be sufficient for thee above all things that exist on earth, even though thou possess nothing.”
(EXCERPTS FROM DALÁ’IL-I-SAB`IH, Selections from the Writings of the Bab, p. 123)
“The man who thinks only of himself and is thoughtless of others is undoubtedly inferior to the animal because the animal is not possessed of the reasoning faculty. The animal is excused; but in man there is reason, the faculty of justice, the faculty of mercifulness. Possessing all these faculties he must not leave them unused. He who is so hard-hearted as to think only of his own comfort, such an one will not be called man.
Man is he who forgets his own interests for the sake of others. His own comfort he forfeits for the well-being of all. Nay, rather, his own life must he be willing to forfeit for the life of mankind. Such a man is the honor of the world of humanity. Such a man is the glory of the world of mankind. Such a man is the one who wins eternal bliss. Such a man is near to the threshold of God. Such a man is the very manifestation of eternal happiness. Otherwise, men are like animals, exhibiting the same proclivities and propensities as the world of animals. What distinction is there? What prerogatives, what perfections? None whatever! Animals are better even—thinking only of themselves and negligent of the needs of others.
Consider how the greatest men in the world—whether among prophets or philosophers—all have forfeited their own comfort, have sacrificed their own pleasure for the well-being of humanity. They have sacrificed their own lives for the body politic. They have sacrificed their own wealth for that of the general welfare. They have forfeited their own honor for the honor of mankind. Therefore it becomes evident that this is the highest attainment for the world of humanity.
(Foundations of World Unity, Pages 38-43: 43)