A God-realized soul can awaken and kindle another soul. But, no guru can give a secret formula for Self-realization without His grace. It is said that human birth, faith in God, and the help of a sadguru come only by His grace. One has to complete the journey with his or her own efforts. One has to row his or her boat through the turbulent waters of this world.
People discover the truth by their own efforts.
Just as the complete spectrum of sunlight is not visible to human eye without a prism, similarly, we cannot see the light of Brahm without the grace of Guru, God, and Gita. Personally, we feel that anybody who does not share the knowledge fully is not helping either his own spiritual progress, the progress of the society, or the followers. The Eastern gurus should learn the art of sharing from the West. The material progress of the world is mostly due to the sharing of scientific and technological knowledge of the West. The fees are affordable and the requirements not very difficult to meet.