984 – “Refusal to believe until proof is given is a rational position; denial of all outside of our own limited experience is absurd.”

-Annie Besant

913 – “Randomness, chaos, uncertainty, and chance are all a part of our lives. They reside at the ill-defined boundaries between what we know, what we can know, and what is beyond our knowing. They make life interesting.”

-Ivars Peterson

747 – “Vim coeli reserate viri: venit agnita ad usus: Ignotae videas commoda nulla rei.”

“Discover the force of the heavens O Men: Once recognized it can be put to use: No use could be seen in unknown things.”

–Johannes Kepler

612 – “… Art is an adventure into an unknown world, which can be explored only by those willing to take risks.”

–Mark Rothko

328 – “And as imagination bodies forth the forms of things unknown, the poet’s pen turns them to shapes and give airy nothings a local habitation and a name.”

–Theseus in William Shakespeare’s A Midsummer Night’s Dream

294 – “A ship in harbor is safe, but that is not what ships are made for.”

–John Augustus Shedd

“A ship in port is safe, but that’s not what ships are built for.”

–Rear Admiral Grace Hopper

142 – “Don’t be in such a hurry to condemn a person because he doesn’t do what you do, or think as you think. There was a time when you didn’t know what you know today.”

– Malcolm X [attributed]

105 – “Only those who will risk going too far can possibly find out how far one can go.”

– T S Eliot