Humans do have an amazing capacity for believing what they choose -- and excluding that which is painful. It's hard to believe that something which is neither seen nor felt can do so much harm.
Sometimes a feeling is all we humans have to go on. Perhaps man wasn't meant for paradise. Maybe he was meant to claw, to scratch all the way. One man cannot summon the future. But one man can change the present! I speak of rights! A machine has none; a man must. If you do not grant him that right, you have brought us down to the level of the machine; indeed, you have elevated that machine above us! Improve a mechanical device and you may double productivity. But improve man, you gain a thousandfold. Now, I don't pretend to tell you how to find happiness and love, when every day is a struggle to survive. But I do insist that you do survive, because the days and the years ahead are worth living for!
You may find that having is not so pleasing a thing as wanting. This is not logical, but it is often true. Insufficient facts always invite danger. Perhaps man wasn't meant for paradise. Maybe he was meant to claw, to scratch all the way. They used to say that if Man was meant to fly, he'd have wings. But he did fly. He discovered he had to. Leave bigotry in your quarters; there's no room for it on the bridge. Resistance Is Futile! It was the best of times, it was the worst of times.’ …Message, Spock?” “…None that I am conscious of — save, perhaps, for ‘Happy Birthday.‘