Srila Bhaktisiddhanta Saraswati

nama om vishnu padaya krishna presthaya bhutale
srimate bhaktisiddhanta sarasvati iti namine
 
I offer my respectful obeisances unto His Divine Grace Srila Bhaktisiddhanta Sarasvati, who is very dear to Lord Krishna, having taken shelter at His lotus feet.
sri varsabhanavi devi dayitaya krpadhaye
krishna sambandha vijnana dayine prabhave namah

I offer my respectful obeisances to Sri Varsabhanavi-devi-dayita Dasa [another name of Srila Bhaktisiddhanta Sarasvati], who is favored by Srimati Radharani and who is the ocean of transcendental mercy and the deliverer of the science of Krsna. 
madhuryojjvala premadhya sri rupanuga bhaktida
sri gaura karuna sakti-vigrahaya namo ‘stu te
I offer my respectful obeisances unto you, the personified energy of Sri Caitanya’s mercy, who deliver devotional service which is enriched with conjugal love of Sri Sri Radha and Krishna, coming exactly in the line of revelation of Srila Rupa Gosvami.
 
names te gaura vani sri murtaye dina tarine
rupanuga viruddhapasiddhanta dhvanta harine
I offer my respectful obeisances unto you, who are the personified teachings of Lord Caitanya. You are the deliverer of the fallen souls. You do not tolerate any statement which is against the teachings of devotional service enunciated by Srila Rupa Gosvami
Srila Bhaktisiddhanta Sarasvati Thakura, the guru of Srila A.C. Bhaktivedanta Swami Prabhupada, appeared in Sri Ksetra Dhama.(Jagannatha Puri) on 6 February 1874 as the son of Srila Sacidananda Bhaktivinoda Thakura. In his childhood he quickly mastered the Vedas, memorized the Bhdgavad-gita, and relished his father’s philosophical works. He became known as “The Living Encyclopedia” for his vast knowledge. He preached convincingly against casteism and philosophical deviations from Gaudiya Vaisnavism. He tried to unite the four Vaisnava sampradayas by publishing their teachings. Srila Sarasvati Thakura earned the title Nrisimha Guru for his fearless and powerful delivery of the Vaisnava siddhanta. Mayavadis would cross the street to avoid confronting the “lion guru.”
Besides being a courageous preacher, he was ornamented with all divine qualities and full of ecstatic love of God. He established 64 Gaudiya Math temples in India and centers in Burma, England, Germany. Srila Sarasvati Thakura excavated Lord Caitanya’s appearance place at the Yogapitha in Sridhama Mayapur, despite heavy opposition from the money-hungry caste Goswamis of Navadvipa. He built a beautiful Gaudiya Math temple there. Bhaktisiddhanta Saraswati Thakur His three “Brhat-mrdangas” (printing presses) in Madras, Calcutta, Krishna-nagara used to pump out books, magazines, and newspapers to spread the message of Sri Gauranga Mahaprabhu. When asked why he printed a daily spiritual newspaper entitled Nadia Prakash, Srila Sarasvati Thakura replied, “If an insignificant city can produce five daily newspapers, then why can’t we publish a newspaper every ‘Second about the eternal, ever-fresh transcendental activities of the Supreme Personality of Godhead in His unlimited spiritual planet, Goloka Vrindavana?” Bhaktisiddhanta Saraswati Thakur Sri Chaitania Gaudiya Math, Mayapur.
Apart from his father’s writings, Bhaktisiddhantha Saraswati published many authorized sastras: Bhagavad-gita, Srimad Bhagavatam, Caitanya Bhagavata, Caitanya Mangala, Prema-bhakti-candrika, and his favorite book Sri Caitanya-caritamrta. He predicted that foreigners would learn Bengali to relish the nectar left by Srila Krishna Dasa Kaviraja in the Caitanya-caritamrta. He introduced many innovations to expand preaching. All over India he staged free theistic exhibits and dioramas depicting the pastimes of, Sri Krishna and Sri Caitanya Mahaprabhu. Employing the latest technology, he even had animated dolls. To commemorate the many holy places visited by Lord Caitanya he installed marble impressions of the Lord’s lotus feet. Breaking tradition, he let his sannyasis wear tailored kurtas and overcoats, ride in cars and motor-boats, and carry Mahaprabhu’s message across the sea to Europe.
Srila Bhaktisiddhanta Saravati’s revolutionary preaching ideas sprang from the sastrie principle of yukta-vairagya set forth by the rasa acarya, Srila Rupa Gosvami. Being an eternally liberated soul, Srila Sarasvati Thakura knew how to perfectly engage Maya (the illusory energy) in the service of Lord Krishna. Following Srila Thakura Bhaktivinoda’s footsteps, he preached daivi varnashrama to harmonize society and provide spiritual fulfillment for all. Advocating the teachings of Sri Rupa and Sri Raghunatha Dasa Goswamis, he taught the science of devotional service, and showed thousands how to attain pure love for Sri-Sri Gandharvika-Giridhari (Radha-Krishna).
Aside from his phenomenal preaching success in India, Srila Bhaktisiddhanta Sarasvati Thakura’s greatest contribution was Srila A.C. Bhaktivedanta Swami Prabhupada, whom he initiated and inspired to distribute Krishna consciousness all over the world. When Srila Prabhupada was asked to describe his spiritual master Srila Bhaktisiddhanta Sarasvati Thakura, he said, “What can I say? He was a Vaikuntha man.” In Radha-Govinda’s eternal pastimes in Goloka Vrndavana, Srila Sarasvati Thakura serves as Nayana-mani manjari. His pushpa samadhis are at Radha-kunda and Radha Damodara.