Go ahead then; study, study and meditate well what you study. Life is a very serious thing and only those with intelligence and heart go through it worthily. To live is to be among men and to be among men is to struggle. But this struggle is not a brutal and material struggle with men alone; it is a struggle with them, with one’s self, with their passions and one’s own, with errors and preoccupations. It is an eternal struggle with a smile on the lips and tears in the heart. On this battlefield man has no better weapon than his intelligence, no other force but his heart.
— José Rizal, in a letter written to Alfredo Hidalgo