Second Basic Baha'i Principle is:
"The Independent Investigation of the Truth."
All must be free to seek out truth in their own way. The second foundation stone, the sapphire, is a clear blue, "true blue," and the color of faith, inspiration, loyalty and truth. Man must be free to soar in this "Dome of heavens blue truth," and see it with his own eyes.
Truth is the object of search among the principles of finding and gaining new knowledge about the existence of ourselves. Without the gained knowledge, we are but in darkness, unlearned, uncaring and an unimportant animal of creation. However, when mankind is stimulated to even investigate the simplest of items, radiant brilliance of truth of science, religion, knowledge of all things are opened to his understanding. The complex patterns of the intellect, the mind in its functioning capacity, has the ability to comprehend both concrete and abstract thought patterns. Animals think in only terms of concrete visible patterns, while the whole of humanity has both the concrete and abstract thought patterns of tangible physical things as well as the unseen comprehension of intangible thoughts.
To be able to achieve the collected findings of investigated truth, we first must clear our thoughts of traditional concepts unsubstantiated by proofs. Secondly, we have to arise above the prejudices of cultural superstition and small insignificant and trivial notions. Possessing an open receptive mind is essential for positive and untarnished investigation. If we allow our thoughts to prematurely establish our concepts, that we are the only one right and everyone else can only be wrong, we then set before our investigation an obstacle to great to over come. Truth is of one source, foundation and origin. To achieve to the pathway of truth, we must be in unity, which is essential if we are to find the awaiting truth.
Truth is one, of one accord, and can not contradict another truth, for being of the same origin, truth is always of the same radiant vibration. A rose is beautiful and the same, no matter which garden it may bloom in. A star, shining forth constantly in the same radiance, whether from the East or Western horizon, is the same, never is its light opposed to the nature of its reality. In like manner, truth is of one nature and accord, no matter where it is found, or where it may achieve a radiant attraction to any individual.
We must find ourselves willing to clear away all that we have previously learned. Preventing traditional obstacles to clog our steps on the way to truth. We must not allow our love for any one religion or any one personality to blind our eyes and to cloud our thoughts, or we would become fettered by mere superstitions. When we become freed from all these bonds and begin seeking with liberated minds, then shall we be able to arrive at our goal, the radiant light of truth.
"God Himself does not compel the soul to become spiritual. The exercise of the free human will is necessary."
The investigation of truth is not binding upon mankind, rather, it is of a free will of the individual to pursue. For each individual should see and realize for himself the necessary truth manifested in the human temple. God has gifted mankind with the purest gift, the intellect. With such a tool, mankind may discover the realities of his existence, the essence of his creation, its purpose and meaning. The Prophets called onto mankind to open their eyes, not shut them, to use their reason and not to suppress it. "It is clear seeing and free thinking, not servile credulity, that will enable them to penetrate the clouds of prejudice, to shake off the fetters of blind imitation, and attain to the realization of the truth of a new Revelation." Mankind should become use to using all the faculties God has so gloriously given to humanity for the acquisition of truth.
It is essential that individuals should become capable of discerning the true from the false, right from wrong, and of seeing things in their true proportions. Be weary of sayings and purposed truths without valid proofs and sufficient evidence to their credibility. If a heart of the seeker is pure, and their mind is free and escapes the worldly prejudices, the true and earnest seeker will not fail to recognize the divine glory in what ever temple it may become manifested.
"O ye sons of intelligence! The thin eyelid prevents the eye from seeing the world and what is contained therein. Then think of the result when the curtain of greed over the sight of the heart!
O people! The darkness of greed and envy obscures the light of the soul as the cloud prevents the penetration of the sun's rays."
The use of the intellect is the fundamental tool and foundation to search after truth and knowledge. A pure heart and free will to search, to investigate, is the very foundation of a independent Search for Truth. Let it swell in the hearts of all mankind. Once truth is found, then unity can be achieved in its total essence.