No endeavor that is worthwhile is simple in prospect; if it is right, it will be simple in retrospect.
Edward TellerOne may say that predictions are dangerous particularly for the future. If the danger involved in a prediction is not incurred, no consequence follows and the uncertainty principle is not violated.
Edward TellerWhen you come to the end of all the light you know, and it's time to step into the darkness of the unknown, faith is knowing that one of two things shall happen: either you will be given something solid to stand on or you will be taught to fly.
Edward Teller