And to help you, I've got two things to leave you with, from two great philosophers, perhaps two of the greatest philosopher thinkers of the 20th century, one a mathematician and an engineer, and the other a poet.
为了帮助大家，我留下两句话，来自两个伟大的哲学家， 也许是20世纪最伟大的两个思想者。 一位是数学家和工程师，另一位是一位诗人。