Iron rusts from disuse; water loses its purity from stagnation... even so does inaction sap the vigour of the mind.Leonardo da Vinci
“Water is the driving force of all nature.”
Artist and inventor · 1452 – 1519
Leonardo da Vinci was an Italian Renaissance painter, engineer and anatomist whose notebooks reveal an insatiable curiosity about nature and art. He painted the Mona Lisa and The Last Supper, and filled thousands of pages with studies, inventions and observations.
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Who sows virtue reaps honour.Leonardo da Vinci
I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do.Leonardo da Vinci

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

Iron rusts from disuse; stagnant water loses its purity and in cold weather becomes frozen; even so does inaction sap the vigour of the mind.Leonardo da Vinci
He who is fixed to a star does not change his mind.Leonardo da Vinci

He who loves practice without theory is like the sailor who boards ship without a rudder and compass.Leonardo da Vinci

As a well-spent day brings happy sleep, so a life well used brings happy death.Leonardo da Vinci