Temperance and labor are the two best physicians of man; labor sharpens the appetite, and temperance prevents from indulging to excess
Jean-Jacques RousseauToo much apparatus, designed to guide us in experiments and to supplement the exactness of our senses, makes us neglect to use those senses...The more ingenious our apparatus, the coarser and more unskillful are our senses. We surround ourselves with tools and fail to use those which nature has provided every one of us.
Jean-Jacques Rousseau