Let us therefore be humble, without prejudices, preferring others' good to our own! Let us never say, 'I am a believer but he is an infidel', 'I am near to God, whilst he is an outcast'. We can never know what will be the final judgment!  Therefore let us help all who are in need of any kind of assistance.  Let us teach the ignorant, and take care of the young child until he grows to maturity. When we find a person fallen into the depths of misery or sin we must be kind to him, take him by the hand, help him to regain his footing, his strength;  we must guide him with love and tenderness, treat him as a friend not as an enemy.  We have no right to look upon any of our fellow-mortals as evil.

"Paris Talks," p. 147

O my dear one! This day is the day of purification, the day of sanctification, the day of turning toward God, the day of severance from all else save God, the day of lowliness and humiliation, the day of serving the beloved ones of God, the day of becoming utterly destitute of and free from egotism and desire and the day of purity and sacrifice in the path of God. This is incumbent upon thee, so that thou mayest be accepted in the court of the Almighty and praised in His lofty Threshold of Holiness.

"Tablets of Abdu'l-Baha, vol.3," p. 636

While the children are yet in their infancy feed them from the breast of heavenly grace, foster them in the cradle of all excellence, rear them in the embrace of bounty. Give them the advantage of every useful kind of knowledge. Let them share in every new and rare and wondrous craft and art. Bring them up to work and strive, and accustom them to hardship. Teach them to dedicate their lives to matters of great import, and inspire them to undertake studies that will benefit mankind.

"Selections from the Writings of Abdu'l-Baha," p. 129

A friend asked how the teachings of Bahá'u'lláh contrasted with the teachings of Jesus Christ. "The teachings are the same." declared 'Abdu'l-Bahá; "It is the same foundation and the same temple. Truth is one, and without division. The teachings of Jesus are in a concentrated form. Men do not agree to this day as to the meaning of many of His sayings. His teachings are as a flower in the bud. Today, the bud is unfolding into a flower! Bahá'u'lláh has expanded and fulfilled the teachings, and has applied them in detail to the whole world.

"Abdu'l-Baha in London," p. 92

...suppositions regarding lucky or unlucky numbers are purely imaginary. The superstition concerning thirteen had its origin in the fact that His Holiness Jesus Christ was surrounded by twelve disciple and the Judas Iscariot was the thirteenth member of the gathering. This is the source of the superstition, but it is purely imaginary. Although Judas was outwardly a disciple, in reality he was not. Twelve is the original number of significance and completion. Jacob had twelve sons, from whom descended twelve tribes. The disciples of Jesus were twelve; the Imams of Muhammad were twelve. The Zodiacal signs are twelve; the months of the year are twelve etc The mysteries of the Holy Books have become explained in the manifestation of Bahá'u'lláh. Before He appeared, these mysteries were not understood. Bahá'u'lláh opened and unsealed these mysteries.

"Promulgation of Universal Peace," pp. 196-197