The Holy Prophet (S) said: "He who searches for knowledge is similar to a person who fasts during the day and keeps vigil at night and is busy worshipping. If a person acquires a branch of knowledge, it is better for him than possessing as much gold as the height of Abu Qubais Mount which he would distribute in the way of Allah."
Bihar-ul-Anwar, vol.1, p.184
Imam Zayn-ul-'Abideen (‘a) said: "Were people aware of what lies in the obtainment of knowledge, they would pursue it even though they had to make voyages and endanger their lives to obtain it."
Usul al-Kafi, vol. 1, p. 35
Imam Amir ul Mu'mineen ‘Ali (‘a) said: "Acquiring knowledge is not possible while the body (person) is tranquil."
Ghurar-ul-Hikam, p. 348
Imam as-Sadiq (‘a) said: "Safeguard your writings and books because soon the occasion will arise that you will be in need of them."
Bihar-ul-Anwar, vol. 2, p.152
Imam Amir ul Mu'mineen ‘Ali (‘a) said: "Surely, the completion of religion is due to the obtaining of knowledge and acting on it (accordingly), and beware that the obtaining of knowledge is more obligatory for you than earning wealth."
Usul al-Kafi, vol.1, p. 23
Imam Hasan (‘a) said: "Teach your knowledge to others and (try to) learn yourself the knowledge of others."
Bihar-ul-Anwar, vol. 78, p. 111
The Holy Prophet (S) said: "The virtue of knowledge is more beloved with Allah than the virtue of worship."
Bihar-ul-Anwar, vol. 1, p. 167