Bhaktivinod Thakur has written this song “Mana Re Keno Koro Vidya”. The Official Name for this song is Upadesa: Song 10. This song is taken from the book Kalyana Kalpataru. Bhaktivinoda Thakura says what is the use of material knowledge when you have no knowledge of Sri Krishna Lord of the universe. Material knowledge will give us temporary happiness and continuous anxiety. Where as understanding Sri Krishna Govinda will give us inner bliss and happiness
mana re, keno koro vidyar gaurava
smrti-sastra, byakarana, nana-bhasa-alocana,
brddhi kore' jaser saurabha
kintu dekho cinta kori' jadi na bhajile hari,
bidya taba kevala rauraba
krsna prati anurakti, sei bije janme bhakti,
bidya ho'te taha asambhava
bidyar marjana ta'r, kabhu kabhu apakar,
jagatete kori anubhava
je bidyar alocane, krsna-rati sphure mane,
tahari adara jano' saba
bhakti badha jaha ho'te, se bidyar mastakete,
padaghata koro' akaitaba
sarasvati krsna-priya, krsna-bhakti ta'r hiya
binoder sei se baibhava
(1) Oh mind, why do you give such importance to mundane knowledge? Your discussion and deliberation on the smrti scriptures, various languages and grammar certainly increases the sweet fragrant aroma of your own material reputation, name and fame.
(2) But just look here and consider this for your judgment. If you have not worshiped Lord Hari, then all of you so-called knowledge is just like a vicious hell. True devotional service actually takes its birth from the seed of attraction and affection for Krsna. Such a seed is impossible to get by the cultivation of ordinary worldly knowledge.
(3) I feel that the hair-splitting scrutiny of mundane knowledge is actually harmful. On the other hand, however, everyone will appreciate the cultivation of that transcendental knowledge which awakens love and attachment for Krsna within the mind.
(4) Among all the obstacles to devotion, this mundane knowledge is certainly the foremost. You must sincerely kick it out, dear mind, for the real understanding is that Mother Sarasvati, the Goddess of learning, is very dear to Lord Krsna, and devotion to Him is her very heart. This very devotion is indeed the sanctifying grace of Bhaktivinoda.