Muhammad quote: “Happy is the man who avoids dissension, but how fine is the man who is afflicted and shows endurance.”

“Every pain is to be avoided, except those whose endurance will enable the avoidance of greater pain, and every possible happiness is to be harvested, save those whose foregoing will help the universe to larger happiness. There is no obligation commanding any being to endure misery save to avoid misery, and no consideration demanding any one to neglect happiness save for larger happiness—those ascetics who proclaim the divinity of wretchedness to the contrary notwithstanding.”

J. Howard Moore (1862–1916)

Source: Better-World Philosophy: A Sociological Synthesis (1899), The Problem of Industry, p. 17

“Solitude will be welcomed or endured or avoided, according as a man's personal value is large or small.”

Arthur Schopenhauer (1788–1860) German philosopher

“Any man who afflicts the human race with ideas must be prepared to see them misunderstood.”

H.L. Mencken (1880–1956) American journalist and writer

“It is a fine thing when a believer praises and thanks God if good comes to him, and praises God and shows endurance if smitten by affliction. The believer is rewarded for (every good action), even for the morsel he raises to his wife's mouth.”

Muhammad (570–632) Arabian religious leader and the founder of Islam

Al-Tirmidhi, Hadith 537
Sunni Hadith

“He who obeys it not, flies from himself, and does violence to the very nature of man. For his crime he must endure the severest penalties hereafter, even if he avoid the usual misfortunes of the present life.”
Est quidem vera lex recta ratio naturae congruens, diffusa in omnes, constans, sempiterna, quae vocet ad officium iubendo, vetando a fraude deterreat; quae tamen neque probos frustra iubet aut vetat nec improbos iubendo aut vetando movet. Huic legi nec obrogari fas est neque derogari ex hac aliquid licet neque tota abrogari potest, nec vero aut per senatum aut per populum solvi hac lege possumus, neque est quaerendus explanator aut interpres eius alius, nec erit alia lex Romae, alia Athenis, alia nunc, alia posthac, sed et omnes gentes et omni tempore una lex et sempiterna et immutabilis continebit, unusque erit communis quasi magister et imperator omnium deus, ille legis huius inventor, disceptator, lator; cui qui non parebit, ipse se fugiet ac naturam hominis aspernatus hoc ipso luet maximas poenas, etiamsi cetera supplicia, quae putantur, effugerit.

Marcus Tullius Cicero book De Legibus

De Re Publica [Of The Republic], Book III Section 22; as translated by Francis Barham
Variant translations:
True law is right reason in agreement with nature; it is of universal application, unchanging and everlasting; it summons to duty by its commands, and averts from wrongdoing by its prohibitions. And it does not lay its commands or prohibitions upon good men in vain, though neither have any effect on the wicked. It is a sin to try to alter this law, nor is it allowable to attempt to repeal any part of it, and it is impossible to abolish it entirely. We cannot be freed from its obligations by senate or people, and we need not look outside ourselves for an expounder or interpreter of it. And there will not be different laws at Rome and at Athens, or different laws now and in the future, but one eternal and unchangeable law will be valid for all nations and all times, and there will be one master and ruler, that is, God, over us all, for he is the author of this law, its promulgator, and its enforcing judge. Whoever is disobedient is fleeing from himself and denying his human nature, and by reason of this very fact he will suffer the worst penalties, even if he escapes what is commonly considered punishment.
As translated by Clinton W. Keyes (1928)
Context: There is a true law, a right reason, conformable to nature, universal, unchangeable, eternal, whose commands urge us to duty, and whose prohibitions restrain us from evil. Whether it enjoins or forbids, the good respect its injunctions, and the wicked treat them with indifference. This law cannot be contradicted by any other law, and is not liable either to derogation or abrogation. Neither the senate nor the people can give us any dispensation for not obeying this universal law of justice. It needs no other expositor and interpreter than our own conscience. It is not one thing at Rome and another at Athens; one thing to–day and another to–morrow; but in all times and nations this universal law must for ever reign, eternal and imperishable. It is the sovereign master and emperor of all beings. God himself is its author,—its promulgator,—its enforcer. He who obeys it not, flies from himself, and does violence to the very nature of man. For his crime he must endure the severest penalties hereafter, even if he avoid the usual misfortunes of the present life.