Truth is like the light emanating from a lamp; the light is the essence, not the lamp itself. What matters is the pursuit of truth, regardless of its source. Attachment to the lamp may prevent one from appreciating the value of the light if it shines from another lamp. In the search for truth, one must set aside preconceived notions and look for the absolute truth with an open mind.
Religion is the light of the world, and the pursuit of religious teachings requires freeing oneself from rigid constraints and blind prejudice. All religions stem from the one reality, reveal divine knowledge and contribute to the progress of humanity. God's guidance to humanity is the ultimate truth, a truth that is indivisible. Independent investigation of this truth, while setting aside differences, will lead to unity and harmony. Religion's purpose is to foster love among people and bring hearts together.
Bahá'u'lláh emphasizes the importance for each individual to independently and objectively search for the truth so that their belief is based on personal understanding and conviction, rather than merely following others. This personal investigation of truth encourages genuine unity and helps eliminate differences based on inherited beliefs or blind imitation of others.
O SON OF SPIRIT!
The best beloved of all things in My sight is Justice; turn not away therefrom if thou desirest Me, and neglect it not that I may confide in thee. By its aid thou shalt see with thine own eyes and not through the eyes of others, and shalt know of thine own knowledge and not through the knowledge of thy neighbor. Ponder this in thy heart; how it behooveth thee to be. Verily justice is My gift to thee and the sign of My loving-kindness. Set it then before thine eyes.