The visible phenomena of the universe are bound by the universal law of cause and effect. The effect is visible or perceptible, while the cause is invisible or imperceptible. The falling of an apple from a tree is the effect of a certain invisible force called gravitation. Although the force cannot be perceived by the senses, its expression is visible.
Swāmi Abhedānanda (Bengali: স্বামী অভেদানন্দ), born Kaliprasad Chandra (Bengali: কালীপ্রসাদ চন্দ্র) was a sanyasin associated with the Bengali Rennaisance of Vaisnavite Vedanta. Swami Vivekananda encouraged him to head the Vedanta Society, New York in 1897, and spread the message of Vedanta, a theme on which he authored several books. In 1921 he returned to India, and the next year he traveled to Tibet to study with the lamas there. He later founded the Ramakrishna Vedanta Math in Calcutta (now Kolkata) and Darjeeling, India. At the time of his death, he was last surviving direct disciple of the 19th century mystic Sri Ramakrishna.