|Iron rusts from disue; stagnant water loses its purity and in cold weather becomes frozen; even so does inaction sap the vigor of the mind.|
Share your thoughts on Leonardo da Vinci, The Notebooks's quotes with the community:
Use the citation below to add this author page to your bibliography:
"Leonardo da Vinci, The Notebooks Quotes." Quotes.net. STANDS4 LLC, 2014. Web. 19 Sep. 2014. <http://www.quotes.net/authors/Leonardo da Vinci, The Notebooks>.