{"collection":"aor","html_url":"https://unchartedknowledge.5gfusion.net/browse/aor/dv/1135.htm","path":"aor/dv/1135.htm","source_url":"https://sacred-texts.com/aor/dv/1135.htm","text":"The Da Vinci Notebooks\nNecessity is the mistress and guide of nature.\nNecessity is the theme and the inventress, the eternal curb and law of nature.","title":"Vol. II: XIX. Philosophical Maxims. Morals. Polemics and ...","type":"page"}