This section is from the "May I Answer That?" book, by Sri Swami Sivananda. Also available from Amazon: May I Answer That?
My answer is emphatically "No". There is, in fact, an inter-relationship between these two, the one supplementing the other. Bhakti is not at all antagonistic to Jnana. There is undoubtedly a mutual dependence between the two. Both lead to the same destination.
You cannot entirely separate Bhakti from Jnana. When Bhakti matures, it becomes transmuted into Jnana. A real Jnani is a devotee of Lord Hari, Lord Krishna, Lord Rama, Lord Siva, Durga, Sarasvati, Lakshmi, Lord Jesus and Buddha. He is a Samarasa Bhakta. Some ignorant people think that a Jnani is a dry man and has no devotion. This is a sad mistake. A Jnani has a very, very large heart. Go through the hymns of Sri Sankaracharya and try to gauge the depth of his devotion. Go through the writings of Sri Appayya Dikshitar and measure the magnanimous depths of his unbounded devotion.
Swami Ram Tirth was a Jnani. Was he not a Bhakta of Lord Krishna? If a Vedantin excludes Bhakti, remember he has not really grasped and understood Vedanta. The same Nirguna Brahman manifests with a little Maya in a comer as Saguna Brahman for the pious worship of His devotees.
Bhakti is not divorced from Jnana. On the contrary, Jnana intensifies Bhakti. He who has a knowledge of Vedanta is well established in his devotion. He is steady and firm. Some ignorant people say that if a Bhakta studies Vedanta, he will lose his devotion. This is wrong. Study of Vedanta is an auxiliary to increase and develop one's devotion. The devotion of a man proficient in Vedantic literature is well-grounded. Bhakti and Jnana are like the two wings of a bird to help one to fly unto Brahman, to the summit of Mukti.
After a sumptuous meal, generally, people feel drowsy. You may imagine that you are meditating, but it may be purely sleep in a sitting posture. If you follow the rules of Mitahara and take meals before 7 p.m., you can sit and meditate from 9 p.m. to 10 p.m.
Meditation at night, a second sitting, is absolutely necessary. If you do not have sufficient time at night, you can meditate even for a few minutes, say, ten or fifteen, before going to bed. By so doing, the spiritual Samskaras will increase. The spiritual Samskaras are valuable assets or priceless treasures for you. Further, you will have no bad dreams at night. The divine thoughts will be carried during sleep. The good impressions will be there.
Fast. Do Japa of a Mantra for three hours daily. Read the Gita, one chapter daily. Sleep in a separate room. Keep the mind fully occupied. Divert the mind. Entertain noble, sublime thoughts. Have Satsang. Do simple Pranayam with mild Kumbhaks twenty times daily. Do a lot of physical work also. Take simple food. Think that there is neither sex nor sexual Vasana in Atma. Meditate on Atma.
 
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