No human investigation can be called real science if it cannot be demonstrated mathematically. Leonardo da Vinci More Quotes by Leonardo da Vinci More Quotes From Leonardo da Vinci Vitality and beauty are gifts of Nature for those who live according to its laws. Leonardo da Vinci medicine health law For those colours which you wish to be beautiful, always first prepare a pure white ground. Leonardo da Vinci white wish beautiful Many have made a trade of delusions and false miracles, deceiving the stupid multitudes. Leonardo da Vinci deceiving miracle stupid Having wandered some distance among gloomy rocks, I came to the entrance of a great cavern ... Two contrary emotions arose in me: fear and desire--fear of the threatening dark cavern, desire to see whether there were any marvelous things in it. Leonardo da Vinci rocks distance dark The human foot is a masterpiece of engineering and a work of art. Leonardo da Vinci engineering work art The painter has the Universe in his mind and hands. Leonardo da Vinci creativity inspirational art If you cause your ship to stop and place the head of a long tube in the water and place the outer extremity to your ear, you will hear ships at a great distance from you. Leonardo da Vinci distance water long To speak well of a base man is much the same as speaking ill of a good man. Leonardo da Vinci good-man speak men It is a far worthier thing to read by the light of experience than to adorn oneself with the labors of others. Leonardo da Vinci experience light labor Our life is made by the death of others. Leonardo da Vinci dying life death The discovery of a good wine is increasingly better for mankind than the discovery of a new star. Leonardo da Vinci wine stars discovery You should prefer a good scientist without literary abilities than a literate one without scientific skills Leonardo da Vinci scientist skills should The acquisition of knowledge is always of use to the intellect, because it may thus drive out useless things and retain the good. For nothing can be loved or hated unless it is first known. Leonardo da Vinci useless-things acquisition life When the thing taken into union is perfectly adapted to that which receives it, the result is delight and pleasure and satisfaction. Leonardo da Vinci delight unions taken O admirable necessity! O powerful action! What mind can penetrate your nature? What language can express this marvel? None, to be sure. This is where human discourse turns toward the contemplation of the divine. Leonardo da Vinci powerful mind action A good painter is to paint two main things, men and the working of man's mind. Leonardo da Vinci mind men two He who can copy can do. Leonardo da Vinci copies can-do Practice should always be based upon a sound knowledge of theory. Leonardo da Vinci should practice sound The painter will produce pictures of little merit if he takes the works of others as his standard. Leonardo da Vinci merit vision littles Human subtlety will never devise an invention more beautiful, more simple or more direct than does nature because in her inventions nothing is lacking, and nothing is superfluous. Leonardo da Vinci nature beautiful beauty
