That health of body depends in a high degree upon tranquillity of mind is incontestible: the functions of the brain are disturbed, the stomach grows languid, the strength fails for want of food, and the better juices are destroyed, when the mind is oppressed by turbulent affections, by anxiety, love, fear, anger, or sadness. The body will be sane if inhabited by a sane mind. This being the case, we cannot wonder that the Abipones are possessed of great vigour and longevity. Their minds are generally in a tranquil state. They live reckless of the past, little curious about the present, and very seldom anxious for the future. They fear danger, but either from not perceiving or from despising the weightiness of it, always think themselves able to subdue or avoid it. When a numerous foe is announced to be at hand they either provide for their safety by a timely flight, or await the assault, and amidst jocund songs quaff mead, their elixir, which inspires them with courage, and banishes fear. Gnawing cares about the augmentation of their property, or concerning food and raiment, have no place amongst them. They make no mortal of such account as to die, or run mad, for hate or love of him. No affections with them are either violent or of long duration. This tranquillity of mind cherishes the body, and prolongs their lives to extreme old age. I allow that the climate in which they live, and which is neither starved with cold nor parched with heat, is one strengthener of the health, but I deny that it is the only one; for neither the Spaniards nor the other Indians, though they enjoy the same temperature of air, live and thrive like the Abipones. Europeans, if they envy the longevity of the Abipones, should imitate, as far as possible, their manner of life. They should tranquillize their minds by subduing vehement passions. They should interpose a little exercise of body between inaction, and sedentary occupations; they should mingle water with wine, rest with labour. They should moderate their luxuries in dress and eating. They should use simple food, not such as is adulterated by art, and for the purpose of satisfying, not of provoking the appetite, but make sparing application to medicines and physicians. And lastly, which is of the greatest importance for preserving vigour, they should abhor pleasures, the sure destruction of the body, as much as they desire a green old age. CHAPTER VIII. OF THE RELIGION OF THE ABIPONES.