They may forget what you said, But they will never forget how you made them feel. Kind words can be short and easy to speak, but their echoes are endless. The work can wait while you show the child the rainbow, but the rainbow won't wait while you do the work. By learning you will teach, by teaching you will learn. The difference between genius and stupidity is that genius has its limits.
Children are like wet cement.
Whatever falls on them makes an impression. The child's third parent. The mediocre teacher tells. The good teacher explains. The superior teacher demonstrates.