Keep your mind open to change all the time. Welcome it. Court it. It is only by examining and reexamining your opinions and ideas that you can progress.
Dale CarnegieYou and I are standing this very second at the meeting place of two eternities: the vast past that has endured forever, and the future that is plunging on to the last syllable of recorded time. We can't possible live in either of those eternities - no, not even for a split second. But, by trying to do so, we can wreck both our bodies and our minds. So let's be content to live the only time we can possible live: from now until bedtime.
Dale Carnegie