Why couldn't the world that concerns us- be a fiction? And if somebody asked, 'but to be a fiction there surely belongs an author?'- couldn't one answer simply: 'Why? Doesn't this "belongs" perhaps belong to the fiction, too?'
We cannot ask a man what he will do, and if we should, and he should answer us, we should despise him for it. Therefore we must take a man whose opinions are known.
As human beings, don't we need questions without answers as well as questions with answers, questions that we might someday answer and questions that we can never answer?
Ask courageous questions.
Do not be satisfied with superficial answers.
Be open to wonder and at the same time subject all claims to knowledge, without exception, to intense skeptical scrutiny.
Be aware of human fallibility.
Cherish your species and your planet.
To-morrow! the mysterious, unknown guest,
Who cries to me: "Remember Barmecide,
And tremble to be happy with the rest."
And I make answer: "I am satisfied;
I dare not ask; I know not what is best;
God hath already said what shall betide.