Thoreau writes in his journal:
I look around for thoughts when I am overflowing myself. While I live on, thought is still in embryo,—it stirs not within me. Anon it begins to assume shape and comeliness, and I deliver it, and clothe it in its garment of language. But alas! how often when thoughts choke me do I resort to a spat on the back, or swallow a crust, or do anything but expectorate them!