What is life? Thoughts and feelings arise, with or without our will, and we employ words to express them. We are born, and our birth is unremembered and our infancy remembered but in fragments. We live on, and in living we lose the apprehension of life. How vain is it to think that words can penetrate the mystery of our being. Rightly used they may make evident our ignorance of ourselves, and this is much.

Memoir of Percy Bysshe Shelley (ed. 1833)