There are three classes of people: those who see, those who see when they are shown, those who do not see.
The noblest pleasure is the joy of understanding.
A day will come in which men will look upon an animal’s murder the same way they look today upon a man’s murder.
Truly man is the king of beasts, for his brutality exceeds them. We live by the death of others. We are burial places.
King of the animals– as thou hast described him– I should rather say king of the beasts, thou being the greatest–because thou doest only help them, in order that they give thee their children for the benefit of the gullet, of which thou hast attempted to make a sepulchre for all animals; and I would say still more, if I were allowed to speak the entire truth…now does not nature produce enough simple (vegetarian) food for thee to satisfy thyself?
I have from an early age abjured the use of meat, and the time will come when men such as I will look upon the murder of animals as they now look upon the murder of men.
My body is not a tomb for animals.
Although human ingenuity may devise various inventions which, by the help of various instruments, answer to one and the same purpose, yet will it never discover any inventions more beautiful, more simple or more practical than those of nature, because in her inventions there is nothing lacking and nothing superfluous; and she makes use of no counterpoise when she constructs the limbs of animals in such a way as to correspond to the motion of their bodies, but she puts into them the soul of the body.
As a well spent day brings happy sleep, so life well used brings happy death.
While I thought that I was learning how to live, I have been learning how to die.
Now do you not see that the eye embraces the beauty of the whole world? It counsels and corrects all the arts of mankind… it is the prince of mathematics, and the sciences founded on it are absolutely certain. It has measured the distances and sizes of the stars it has discovered the elements and their location… it has given birth to architecture and to perspective and to the divine art of painting.
Perspective is the rein and rudder of painting.
The divisions of Perspective are 3, as used in drawing; of these, the first includes the diminution in size of opaque objects; the second treats of the diminution and loss of outline in such opaque objects; the third, of the diminution and loss of colour at long distances.
The young man should first learn perspective, then the proportions of objects. Next, copy work after the hand of a good master, to gain the habit of drawing parts of the body well; and then to work from nature, to confirm the lessons learned.