There is a well known saying that "Knowledge is a light which God casteth into the heart of  whomsoever He willeth." Bahá'u'lláh explains that it is this kind of knowledge that gives us perception and enables us to know for ourselves and not through the knowledge of others. Bahá'u'lláh states that whatever increases insight is good, as it enables us understand spiritual as well as scientific truths, and that when we exercise this God given faculty we find that true religion is in complete harmony with science and reason. Abdu'l-Baha, the son of Bahá'u'lláh, who visited the home of William Jennings Bryan in Lincoln, in 1912, states:

"... religion must be in accord with science and reason. If it does not correspond with scientific principles and the processes of reason, it is superstition. For God has endowed us with faculties by which we may comprehend the realities of things, contemplate reality itself. If religion is opposed to reason and science, faith is impossible; and when faith and confidence in the divine religion are not manifest in the heart, there can be no spiritual attainment."