That which is impossible has a permanent and constant property, which — Maimonides

"An artisan busies himself with his work for three hours each day and spends nine hours in study."

"The third class of evils comprise those which everyone causes to himself by his own action. This is the largest class, and is far more numerous than the second class. It is especially of these evils that all men complain,—only few men are found that do not sin against themselves by this kind of evil. ...This class of evil originates in mans vices, such as excessive desire for eating, drinking, and love; indulgence in these things in undue measure, or in improper manner, or partaking of bad food. This course brings diseases and afflictions upon the body and soul alike."

"Aristotle was guided by that which appears to be the nature of things. The Ashariyah refused to ascribe to God ignorance about anything... they preferred to admit the above-mentioned absurdities. The Mutazilites refused to assume that God does what is wrong and unjust; on the other hand, they would not contradict common sense and say that it was not wrong to inflict pain on the guiltless, or that the mission of the Prophets and the giving of the Law had no intelligible reason. They likewise preferred to admit the above-named absurdities. But they even contradicted themselves, because they believe on the one hand that God knows everything, and on the other that man has free will. By a little consideration we discover the contradiction."

"A person who lives in a place where the norms of behavior are evil and the inhabitants do not follow the straight path should move to a place where the people are righteous and follow the ways of the good.If all the places with which he is familiar and of which he hears reports follow improper paths, as in our times, ... he should remain alone in seclusion. ...If they are wicked and sinful and do not allow him to reside there unless he mingle with them and follow their evil behavior, he should go out to caves, thickets, and deserts."

"Abraham ... was sunk in Ur of the Chaldees among foolish idolaters. His father and mother and all the people worshipped the stars. ... He knew that all were mistaken and that what caused them to err was worship of the images which drove the Truth out of their minds. ... It was proper to destroy and smash the idols so that the people should not err by them like those who think there is no god save images."

"Teach your tongue to say "I do not know" and you will progress."