As there are a very great variety of religious sects in the world (and which are probably adapted to different constitutions under different circumst… - Robert Owen

It is the interest of the individual and of all society, that he should be made, at the earliest period, to understand his own construction, the proper use of its parts, and how to keep them at all times in a state of health; and especially that he should be taught to observe the varied effects of different kinds of food, and different quantities, upon his own constitution. He should be taught the general and individual laws of health, thus early, that he may know how to prevent the approach of disease. And the knowledge of the particular diet best suited to his constitution, is one of the most essential laws of health.

The advantage of pure, and the disadvantage of impure air are experienced each time we breathe, and all who understand the causes of disease know that an impure atmosphere is most unfavourable to the enjoyment of health, and an efficient cause to shorten human existence within the natural life of man. It is therefore most desirable that decisive measures should be devised and generally adopted to ensure to all a pure atmosphere, in which to live during their lives.

The errors of the times of superstition and bigotry still hold some sway, and compel those who wish to preserve a regard to their respectability in society to an over strained demeanor; and this demeanor sometimes degenerates into hypocrisy, and is often the cause of great inconsistency. It is destructive of every open, honest, generous, and manly feeling. It disgusts many, and drives them to the opposite extreme. It is sometimes the cause of insanity. It is founded in ignorance. While erroneous customs prevail in any country, it would evince an ignorance of human nature in any individual to offend against them, until he has convinced the community of their error.