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

That which is impossible has a permanent and constant property, which is not the result if some agent, and cannot in any way change, and consequently we do not ascribe to God the power of doing what is impossible.

How great is the usefulness of every precept that delivers us from this great error, and leads us back to the true faith: that God, the Creator of all things, rules the Universe; that He must be served, loved, and feared, and not those imaginary deities. According to this faith we approach the true God, and obtain His favour without having recourse to burdensome means; for nothing else is required but to love and fear Him; this is the aim in serving God, as will be shown. Comp. "And now, Israel, what doth the Lord thy God require of thee but to fear the Lord?" &c. (Deut. x. 12)

It is of great advantage that man should know his station, and not imagine that the whole universe exists only for him. We hold that the universe exists because the Creator wills it so; that mankind is low in rank as compared with the uppermost portion of the universe, viz., with the spheres and the stars; but, as regards the angels, there cannot be any real comparison between man and angels, although man is the highest of all beings on earth; i.e., of all the beings formed of the four elements.