Truth does not become more true by virtue of the fact that the entire world agrees with it, nor less so even if the whole world disagrees with it.

You must accept the truth from whatever source it comes.

For the elements have the property of moving back to their place in a straight line, but they have no properties which would cause them to remain where they are, or to move other-wise than in a straight line, These rectilinear motions of these four elements when returning to their original place are are of two kinds, either centrifugal,vziz.>the motion of the air and the fire; or centripedal,viz.> the motion of the earth, and the water; and when the elements have reached their original place, they remain at rest.

You should recognize that man’s soul, this single entity whose powers and parts we have described, may be compared to matter, and that the power of reasoning is its completed form. As long as the soul lies dormant and does not acquire its form from knowledge, then the nature of the soul is useless and exists in vain.

Your purpose...should always be to know...the whole that was intended to be known.

The person who wishes to attain human perfection should study logic first, next mathematics, then physics, and, lastly, metaphysics.

No disease that can be treated by diet should be treated with any other means.

Every human being should regard himself as if he were exactly balanced between innocence and guilt. Simultaneously he should regard the world as being in the same case. It follows then that if he performs one good deed, he has weighted the scales in favour of both himself and of the whole world, and thus brought about salvation both for himself and for all the inhabitants of the world.

If a person studies too much and exhausts his reflective powers, he will be confused, and will not be able to apprehend even that which had been within the power of his apprehension. For the powers of the body are all alike in this respect.

The physician should not treat the disease but the patient who is suffering from it

When the Rabbis stated that obedience or disobedience to the commandments depends not on the will of Hashem but on man’s free will, they echoed Jeremiah, who said, “Out of the mouth of the Most High there comes neither the bad nor the good” (Lamentations 3:38). By the bad he meant vice, and by the good he intended virtue, meaning that Hashem does not predetermine any person as bad or good. Since this is so, a person owes it to himself to mourn his sins and transgressions, since he has committed them of his own free will, as Jeremiah says, “For what should a living man mourn? Let every man mourn because of his sins” (Lamentations 3:39). Jeremiah answers his question positively, telling us that the remedy for our disease lies with us. Just as our failings stemmed from our own free will, so do we have the power to repent of our evil deeds.