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 CarnegieIt was this desire for a feeling of importance that led an uneducated, poverty-stricken grocery clerk to study some law books he found in the bottom of a barrel of household plunder that he had bought for fifty cents. You have probably heard of this grocery clerk. His name was Lincoln.
Dale Carnegie