“The Unseasonable man is one who will go up to a busy person, and open his heart to him. He will serenade his mistress when she has a fever. He will address himself to a man who has been cast in a surety-suit, and request him to become his security. He will come to give evidence when the trial is over.”

Source: The Winner Stands Alone

Variant translations:
Above all, do not lie to yourself. A man who lies to himself and listens to his own lie comes to a point where he does not discern any truth either in himself or anywhere around him, and thus falls into disrespect towards himself and others. Not respecting anyone, he ceases to love, and having no love, he gives himself up to passions and coarse pleasures, in order to occupy and amuse himself, and in his vices reaches complete bestiality, and it all comes from lying continually to others and to himself. A man who lies to himself is often the first to take offense. It sometimes feels very good to take offense, doesn't it? And surely he knows that no one has offended him, and that he himself has invented the offense and told lies just for the beauty of it, that he has exaggerated for the sake of effect, that he has picked on a word and made a mountain out of a pea — he knows all of that, and still he is the first to take offense, he likes feeling offended, it gives him great pleasure, and thus he reaches the point of real hostility… Do get up from your knees and sit down, I beg you, these posturings are false, too.
Part I, Book I: A Nice Little Family, Ch. 2 : The Old Buffoon; as translated by Richard Pevear and Larissa Volokhonsky, p. 44
The Brothers Karamazov (1879–1880)

L'homme croit souvent se conduire lorsqu'il est conduit; et pendant que par son esprit il tend à un but, son coeur l'entraîne insensiblement à un autre.
Maxim 43.
Reflections; or Sentences and Moral Maxims (1665–1678)

Source: Drenai series, Legend, Pt 1: Against the Horde, Ch. 7
Context: [A]ll men die.... A man needs many things in his life to make it bearable. A good woman. Sons and daughters. Comradeship. Warmth. Food and shelter. but above all these things, he needs to be able to know that he is a man. And what is a man? He is someone who rises when life has knocked him down. Someone who raises his fist to heaven when a storm has ruined his crop — and then plants again. And again. A man remains unbroken by the savage twists of fate. That man may never win. But when he sees himself reflected, he can be proud of what he sees. For low he may be in the scheme of things: peasant, serf, or dispossessed. But he is unconquerable. And what is death? an end to trouble. An end to strife and fear.... Bear this in mind when you decide your future.

I Don't Know One Editor In India Who Is Well-Read

(JP IV A81) 1843
1840s, The Journals of Søren Kierkegaard, 1840s

National Book Award Acceptance Speech (1957)
Context: It is true that the poet does not directly address his neighbors; but he does address a great congress of persons who dwell at the back of his mind, a congress of all those who have taught him and whom he has admired; that constitute his ideal audience and his better self. To this congress the poet speaks not of peculiar and personal things, but of what in himself is most common, most anonymous, most fundamental, most true of all men. And he speaks not in private grunts and mutterings but in the public language of the dictionary, of literary tradition, and of the street. Writing poetry is talking to oneself; yet it is a mode of talking to oneself in which the self disappears; and the products something that, though it may not be for everybody, is about everybody.

Misattributed

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 130.