Consequently he who wishes to attain to human perfection, must therefore first study Logic, next the various branches of Mathematics in their proper order, then Physics, and lastly Metaphysics.
The great sickness and the grievous evil consist in this: that all the things that man finds written in books, he presumes to think of as true-and all the more so if the books are old.
The same is the case with those opinions of man to which he has been accustomed from his youth; he likes them, defends them, and shuns the opposite views.
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.
Every man should view himself as equally balanced: half good and half evil. Likewise, he should see the entire world as half good and half evil. With a single good deed he will tip the scales for himself, and for the entire world, to the side of good.
One should see the world, and see himself as a scale with an equal balance of good and evil. When he does one good deed the scale is tipped to the good – he and the world is saved. When he does one evil deed the scale is tipped to the bad – he and the world is destroyed.
