Only the blind gropes in the darkness.
If you have no direction in life, you’ll get nowhere or another way to put it is, “If you’re going nowhere, you’re guarenteed to get there.”
“I don’t think it had ever occurred to me that man’s supremacy is not primarily due to his brain, as most of the books would have one think. It is due to the brain’s capacity to make use of the information conveyed to it by a narrow band of visible light rays. His civilisation, all that he had achieved or might achieve, hung upon his ability to perceive that range of vibrations from red to violet. Without that, he was lost.”
― John Wyndham, The Day of the Triffids