From The Brothers Karamazov:
"Some will say, perhaps, that Alyosha was slow, undeveloped, had not finished his studies and so on. That he had not finished his studies is true, but to say that he was slow or stupid would be a great injustice. I will simply repeat what I have already said above: he set out upon this path only because at the time it alone struck him and presented him all at once with the whole ideal way out for his soul struggling from darkness to light. Add to this that he was partly a young man of our time--that is, honest by nature demanding the truth seeking it and believing in it, and in that belief demanding immediate deed, with an unfailing desire to sacrifice everything for this deed, even life. Although unfortunately, these young men do not understand that the sacrifice of life is, perhaps, the easiest of all sacrifices in many cases, while to sacrifice, for example, five or six years of their ebulliently youthful life to hard, difficult studies, to learning, in order to increase tenfold our strength to serve the very truth and the very deed that they loved and set out to accomplish--such sacrifice is quite often almost beyond the strength of many of them."
pg. 26, trans. by Richard Pevear and Larissa Volokhonsky