لَوْ يَعْلَمُ النَّاسُ مَا فِي طَلَبِ الْعِلْمِ لَطَلَبُوهُ‏

وَ لَوْ بِسَفْكِ‏ الْمُهَجِ وَ خَوْضِ اللُّجَج
‏
_{بحارالأنوار، ج 1، ص ١٨٥}

“If people knew what (brilliant result) lies in seeking knowledge they would have definitely sought it even by shedding the blood of their hearts and plunging into the depth of oceans.”

Imam Sajjad (‘a)