Mark

“The only way of discovering the limits of the possible is to venture a little way past them into the impossible.”
― Arthur C. Clarke

“I can live with doubt and uncertainty and not knowing. I think it is much more interesting to live not knowing than to have answers that might be wrong. If we will only allow that, as we progress, we remain unsure, we will leave opportunities for alternatives. We will not become enthusiastic for the fact, the knowledge, the absolute truth of the day, but remain always uncertain … In order to make progress, one must leave the door to the unknown ajar.”
― Richard P. Feynman

“You have no responsibility to live up to what other people think you ought to accomplish. I have no responsibility to be like they expect me to be. It's their mistake, not my failing.”
― Richard P. Feynman, Surely You're Joking, Mr. Feynman!: Adventures of a Curious Character

“The opinions that are held with passion are always those for which no good ground exists; indeed the passion is the measure of the holders lack of rational conviction. Opinions in politics and religion are almost always held passionately.”
― Bertrand Russell, Sceptical Essays