"One should not consider as a defect the fact that the Torah provides for the well-being of the body, as it provides for the well-being of the soul."

"It is proper for man to abstain from all things that are harmful to the body, even if they are not prohibited by the Torah."

"The more necessary a thing is for the preservation of man, the more it is known to all."

"The universe is governed by laws which are fixed and unchangeable."

"The human mind is capable of understanding the divine attributes."