A man who lies to himself, and believes his own lies becomes unable to recognize truth, either in himself or in anyone else, and he ends up losing respect for himself and for others. When he has no respect for anyone, he can no longer love, and, in order to divert himself, having no love in him, he yields to his impulses, indulges in the lowest forms of pleasure, and behaves in the end like an animal. And it all comes from lying - lying to others and to yourself.
Fyodor DostoevskyTo strive consciously for an object and to engage in engineering -- that is, incessantly and eternally to make new roads, wherever they may lead.
Fyodor DostoevskyBut man is a fickle and disreputable creature and perhaps, like a chess-player, is interested in the process of attaining his goal rather than the goal itself.
Fyodor DostoevskyI've made a terrible confession to you, he concluded gloomily. Do appreciate it, gentlemen. And it's not enough, not enough to appreciate it, you must not just appreciate it, it should also be precious to you, and if not, if this, too, goes past your souls, then it means you really do not respect me, gentlemen. I tell you that, and I will die of shame at having confessed to such men as you.
Fyodor Dostoevsky