734 Quotes by Leonardo da Vinci

He who does not punish evil commands it to be done.

Just as eating contrary to the inclination is injurious to the health, so study without desire sports the memory, and it retains nothing that it takes in.

Iron rusts from disuse; water loses its purity from stagnation ... even so does inaction sap the vigour of the mind.

Iron rusts from disuse, stagnant water loses its purity and in cold weather becomes frozen; even so does inaction sap the vigors of the mind.

Iron rusts from disuse, stagnant water loses its purity, and in cold weather becomes frozen, even so does inaction sap the vigors of the mind.

You do ill to praise, but worse to censure, what you do not understand

Thou, O God, dost sell us all good things at the price of labor

Time stays long enough for those who use it.

When once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return.