" Another learning which cost me much to recognize, can be stated in four words. The facts are friendly.
(...) Especially in our early investigations I can well remember the anxiety of waiting to see how the findings came out. Suppose our hypotheses were disproved! Suppose we were mistaken in our views! (...) I have perhaps been slow in coming to realize that the facts are always friendly. Every bit of evidence that one can acquire, in any area, leads one that much closer to what is true. "

― Carl R. Rogers , On Becoming a Person: A Therapist's View of Psychotherapy