“Iron rusts from disuse; stagnant water loses its purity and in cold weather becomes frozen; even so does inaction sap the vigor of the mind.” – Leonardo da Vinci, Leonardo’s Notebooks [1]
“Iron rusts from disuse; stagnant water loses its purity and in cold weather becomes frozen; even so does inaction sap the vigor of the mind.” – Leonardo da Vinci, Leonardo’s Notebooks [1]