Rumi

“I learned this, at least, by my experiment: that if one advances confidently in the direction of his dreams, and endeavors to live the life which he has imagined, he will meet with a success unexpected in common hours.”
― Henry David Thoreau, Walden: Or, Life in the Woods

“An expert is a person who has made all the mistakes that can be made in a very narrow field.”
― Niels Bohr

“Reality is merely an illusion, albeit a very persistent one.”
― Albert Einstein

“The story so far:
In the beginning the Universe was created.
This has made a lot of people very angry and been widely regarded as a bad move.”
― Douglas Adams, The Restaurant at the End of the Universe