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“As I write, highly civilized human beings are flying overhead, trying to kill me.
They do not feel any enmity against me as an individual, nor I against them. They are ‘only doing their duty’, as the saying goes. Most of them, I have no doubt, are kind-hearted law-abiding men who would never dream of committing murder in private life. On the other hand, if one of them succeeds in blowing me to pieces with a well-placed bomb, he will never sleep any the worse for it. He is serving his country, which has the power to absolve him from evil.”
― George Orwell, The Lion and the Unicorn: Socialism and the English Genius

“Without a firm idea of himself and the purpose of his life, man cannot live, and would sooner destroy himself than remain on earth, even if he was surrounded by bread.”
― Fyodor Dostoyevsky

“If only there were evil people somewhere insidiously committing evil deeds, and it were necessary only to separate them from the rest of us and destroy them. But the line dividing good and evil cuts through the heart of every human being. And who is willing to destroy a piece of his own heart?

During the life of any heart this line keeps changing place; sometimes it is squeezed one way by exuberant evil and sometimes it shifts to allow enough space for good to flourish. One and the same human being is, at various ages, under various circumstances, a totally different human being. At times he is close to being a devil, at times to sainthood. But his name doesn't change, and to that name we ascribe the whole lot, good and evil.

Socrates taught us: 'Know thyself!”
― Alexander Solzhenitsyn, The Gulag Archipelago

“The last of the human freedoms: to choose one's attitude in any given set of circumstances, to choose one's own way. And there were always choices to make. Every day, every hour, offered the opportunity to make a decision, a decision which determined whether you would or would not submit to those powers which threatened to rob you of your very self, your inner freedom; which determined whether or not you become the plaything to circumstance, renouncing freedom and dignity...”
― Victor Frankl, Man's Search For Ultimate Meaning