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.

To the totality of purposes of the perfect Law there belong the abandonment, depreciation, and restraint of desires in so far as possible.

The whole object of the Prophets and the Sages was to declare that a limit is set to human reason where it must halt.

Maimonides Quotes