734 Quotes by 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.

Theory without practice cannot survive and dies as quickly as it lives. He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may be cast.

Whoever despises the high wisdom of mathematics nourishes himself on delusion.

Just as a good day's work leads to pleasant sleep, so a life well-spent leads to a pleasant death.

If you are alone, you belong entirely to yourself. If you are accompanied by even one companion, you belong only half to yourself or even less in proportion to the thoughtlessness of his conduct, and if you have more than one companion, you will fall more deeply into the same plight.