The function of muscle is to pull and not to push, except in the case of the genitals and the tongue. - Leonardo da Vinci

The human bird shall take his first flight,filling the words with amazement,all writings with his fame,and bringing eternal glory to those whose nest whence he sprang.

The deeper the feeling, the greater the pain

Drawing is based upon perspective, which is nothing else than a thorough knowledge of the function of the eye. And this function simply consists in receiving in a pyramid the forms and colours of all the objects placed before it. I say in a pyramid, because there is no object so small that it will not be larger than the spot where these pyramids are received into the eye. Therefore, if you extend the lines from the edges of each body as they converge you will bring them to a single point, and necessarily the said lines must form a pyramid.