https://en.wikipedia.org/wiki/The_Brothers_Karamazov

"As a general rule, people, even the wicked, are much more naive and simple-hearted than we suppose. And we ourselves are, too."

"Those innocent eyes slit my soul like a razor."

"He seemed throughout his life to put implicit trust in people; yet no one ever looked on him as a simple or naive person. There was something about him which made one feel at once (and it was so all his life afterwards) that he did not care to be a judge of others--that he would never take it upon himself to criticize and would never condemn anyone for anything. He seemed, indeed, to accept everything without the least condemnation though often grieving bitterly. And this was so much so that no one could surprise or frighten him even in his earliest youth."

"... miracles are never a stumbling-block to the realist. It is not miracles that prompt realists to belief. The genuine realist, if he is an unbeliever, will always find strength and ability to disbelieve in the miraculous, and if he is confronted with a miracle as an irrefutable fact he would rather disbelieve his own senses than admit the fact. Even if he admits it, he admits it as a fact of nature till then unrecognized by him. Faith does not, in the realist, spring from the miracle but the miracle from faith. If the realist once believes, then he is bound by his very realism to admit the miraculous also."

"Above all, don't lie to yourself. The man who lies to himself and listens to his own lie comes to such a point that he cannot distinguish the truth within him, or around him, and so loses all respect for himself and for others. And having no respect he ceases to love. And in order to distract himself without love he gives way to passions and coarse pleasures and sinks to bestiality in his vices--all this from continual lying to other men and to himself. The man who lies to himself can be more easily offended than anyone else. You know it is sometimes very pleasant to take offense, isn't it? A man may know that nobody has insulted him, but that he has invented the insult for himself, has lied and exaggerated to make it picturesque, has caught at a word and made a mountain out of a molehill--he knows that himself, yet he will be the first to take offense, and will revel in his resentment till he feels great pleasure in it. And so he will pass to genuine vindictiveness..."

 

These are the sentences I found interesting. Most of them are very philosophical and hold psychological truth. You really have to give it to Fyodor Dostoevsky! He deeply understood human psychology and integrated it into his characters, although they are mirrors of the people in his real life.