‘It is only when we forget all our learning that we begin to know. I do not get nearer … to any natural object so long as I presume that I have an introduction to it from some learned man. To conceive of it with a total apprehension I must for the thousandth time approach it as something totally strange. If you would make acquaintance with the ferns you must forget your botany.’

Henry David Thoreau, 1859