Before he was famous, before he painted the Mona Lisa and the Last Supper, before he invented the helicopter, before he drew the most famous image of man, before he was all of these things, Leonardo da Vinci was an armorer, a weapons guy, a maker of things that go "boom".
And, like all of us, he had to put together a resume to get his next gig. So in 1482, at the age of 30, he wrote out a letter and a list of his capabilities and sent it off to Ludovico il Moro, the Duke of Milan. Here is how it was written:
"Most Illustrious Lord, Having now sufficiently considered the specimens of all those who proclaim themselves skilled contrivers of instruments of war, and that the invention and operation of the said instruments are nothing different from those in common use: I shall endeavor, without prejudice to any one else, to explain myself to your Excellency, showing your Lordship my secret, and then offering them to your best pleasure and approbation to work with effect at opportune moments on all those things which, in part, shall be briefly noted below.
I have a sort of extremely light and strong bridges, adapted to be most easily carried, and with them you may pursue, and at any time flee from the enemy; and others, secure and indestructible by fire and battle, easy and convenient to lift and place. Also methods of burning and destroying those of the enemy.
I know how, when a place is besieged, to take the water out of the trenches, and make endless variety of bridges, and covered ways and ladders, and other machines pertaining to such expeditions.
If, by reason of the height of the banks, or the strength of the place and its position, it is impossible, when besieging a place, to avail oneself of the plan of bombardment, I have methods for destroying every rock or other fortress, even if it were founded on a rock, etc.
Again, I have kinds of mortars; most convenient and easy to carry; and with these I can fling small stones almost resembling a storm; and with the smoke of these cause great terror to the enemy, to his great detriment and confusion.
And if the fight should be at sea I have kinds of many machines most efficient for offense and defense; and vessels which will resist the attack of the largest guns and powder and fumes.
I have means by secret and tortuous mines and ways, made without noise, to reach a designated spot, even if it were needed to pass under a trench or a river.
I will make covered chariots, safe and unattackable, which, entering among the enemy with their artillery, there is no body of men so great but they would break them. And behind these, infantry could follow quite unhurt and without any hindrance.
In case of need I will make big guns, mortars, and light ordnance of fine and useful forms, out of the common type.
Where the operation of bombardment might fail, I would contrive catapults, mangonels, trabocchi, and other machines of marvellous efficacy and not in common use. And in short, according to the variety of cases, I can contrive various and endless means of offense and defense.
In times of peace I believe I can give perfect satisfaction and to the equal of any other in architecture and the composition of buildings public and private; and in guiding water from one place to another.
I can carry out sculpture in marble, bronze, or clay, and also I can do in painting whatever may be done, as well as any other, be he who he may.
Again, the bronze horse may be taken in hand, which is to be to the immortal glory and eternal honor of the prince your father of happy memory, and of the illustrious house of Sforza.
And if any of the above-named things seem to anyone to be impossible or not feasible, I am most ready to make the experiment in your park, or in whatever place may please your Excellency - to whom I comment myself with the utmost humility, etc."
Being a hopeless pedantic, here's what I think we can learn from Leonardo's resume:
This is a fantastic piece of personal marketing! There's none of his famous backwards-mirror writing here - this letter was intended to be read and to persuade.
He doesn't recite past achievements. He doesn't mention the painting of the altarpiece for the Chapel of St Bernard; he doesn't provide a laundry list of past bombs he's built; he doesn't cite his prior employment in artist Andrea di Cione's studio. He does none of these things because those would be about his achievements, not the Duke's needs. Instead, he sells his prospective employer on what Leonardo can do for him.
Standing in the shoes of the Duke of Milan, imagine receiving this magnificent letter from the young prodigy of Florence. The specific descriptive paint a vivid picture of siege engines and bombardments and mortars and trench-draining and bridges to defeat the enemy. Can you visualize those scenes that ran through the Duke's head as he held this letter in his hands and read through Leonardo da Vinci's bold statements of capabilities.
Happy 562nd birthday Leonardo!