This is the Cause that hath caused all your superstitions and idols to tremble.

Bahá’u’lláh, Synopsis and Codification of the Kitab-i-Aqdas, p. 26

Thus have their superstitions become veils between them and their own hearts and kept them from the path of God.

Bahá’u’lláh, Tablet of Ahmad

For today the people out of the depths of their superstition, imagine that any individual who believes in God and His signs, and in the Prophets and Divine Revelations and laws, and is a devout and God-fearing person, must of necessity remain idle and spend his days in sloth, so as to be considered in the sight of God as one who has forsaken the world and its vanities, set his heart on the life to come, and isolated himself from human beings in order to draw nearer to God.

‘Abdu’l-Bahá, The Secret of Divine Civilization, p. 39-40

If statements and teachings of religion are found to be unreasonable and contrary to science, they are outcomes of superstition and imagination. Innumerable doctrines and beliefs of this character have arisen in the past ages. Consider the superstitions and mythology of the Romans, Greeks and Egyptians; all were contrary to religion and science. It is now evident that the beliefs of these nations were superstitions, but in those times they held to them most tenaciously. For example, one of the many Egyptian idols was to those people an authenticated miracle, whereas in reality it was a piece of stone. As science could not sanction the miraculous origin and nature of a piece of rock, the belief in it must have been superstition. It is now evident that it was superstition. Therefore, we must cast aside such beliefs and investigate reality. That which is found to be real and conformable to reason must be accepted, and whatever science and reason cannot support must be rejected as imitation and not reality.

‘Abdu’l-Bahá, The Promulgation of Universal Peace, p. 175-176

It is evident that within the human organism the intellect occupies the supreme station. Therefore, if religious belief, principle or creed is not in accordance with the intellect and the power of reason, it is surely superstition.

‘Abdu’l-Bahá, The Promulgation of Universal Peace, p. 63-64

Look around and see how the world of today is drowned in superstition and outward forms!

‘Abdu’l-Bahá, Paris Talks, p. 144

Man must free himself from the . . . thorns of superstitions . . . that he may discover reality in the harvests of true knowledge. Otherwise the discovery of reality is impossible, contention and divergence of religious belief will always remain and mankind, like ferocious wolves will rage and attack each other in hatred and antagonism. We supplicate God that He may destroy the veils which limit our vision and that these becloudings which darken the way of the manifestation of the shining lights may be dispelled in order that the effulgent Sun of Reality may shine forth. We implore and invoke God, seeking His assistance and confirmation.

‘Abdu’l-Bahá, Foundations of World Unity, p. 76

Superstitions have obscured the fundamental reality, the world is darkened and the light of religion is not apparent. This darkness is conducive to differences and dissensions; rites and dogmas are many and various; therefore discord has arisen among the religious systems whereas religion is for the unification of mankind. True religion is the source of love and agreement amongst men, the cause of the development of praiseworthy qualities; but the people are holding to the counterfeit and imitation, negligent of the reality which unifies; so they are bereft and deprived of the radiance of religion. They follow superstitions inherited from their fathers and ancestors. To such an extent has this prevailed that they have taken away the heavenly light of divine truth and sit in the darkness of imitations and imaginations. That which was meant to be conducive to life has become the cause of death; that which should have been an evidence of knowledge is now a proof of ignorance; that which was a factor in the sublimity of human nature has proved to be its degradation. Therefore the realm of the religionist has gradually narrowed and darkened and the sphere of the materialist has widened and advanced; for the religionist has held to imitation and counterfeit, neglecting and discarding holiness and the sacred reality of religion. When the sun sets it is the time for bats to fly. They come forth because they are creatures of the night. When the lights of religion become darkened the materialists appear. They are the bats of night. The decline of religion is their time of activity; they seek the shadows when the world is darkened and clouds have spread over it.

‘Abdu’l-Bahá, Foundations of World Unity, p. 71

The sciences and arts, all inventions, crafts, trades and their products have come forth from the intellect of man. It is evident that within the human organism the intellect occupies the supreme station. Therefore, if religious belief, principle or creed is not in accordance with the intellect and the power of reason, it is surely superstition.

‘Abdu’l-Bahá, The Promulgation of Universal Peace, p. 63

[I]t is imperative that we should renounce our own particular prejudices and superstitions if we earnestly desire to seek the truth. Unless we make a distinction in our minds between dogma, superstition and prejudice on the one hand, and truth on the other, we cannot succeed. When we are in earnest in our search for anything we look for it everywhere. This principle we must carry out in our search for truth.

‘Abdu’l-Bahá, Paris Talks, p. 136

‘Abdu’l-Bahá replied that superstitions were of two kinds; those that were harmful and dangerous, and those that were harmless and produced certain good effects. For example, there were some poor people who believed that misfortunes and punishments were caused by a Great Angel with a sword in his hand, who struck down those who stole, and committed murder and crimes. They thought the flashes of lightning were the weapons of this angel, and that if they did wrong they would be struck by lightning. This belief caused them to refrain from evil actions. The Chinese held a superstition that if they burn certain pieces of paper this will drive the devils away; they sometimes burnt these pieces of paper on board ships when they were travelling in order to drive away devils, and by so doing they set fire to the ships and destroyed many lives. This was a type of dangerous and harmful superstition.

‘Abdu’l-Bahá, ‘Abdu’l-Bahá in London, p. 73

Experience shows that ignorance breeds superstition and perpetuates religious prejudice and animosity.

Bahá’í International Community, 1992 Feb 10, Creating a Climate of Religious Tolerance