Quality is remembered long after price is forgotten.
The higher your energy level, the more efficient your body. The more efficient your body, the better you feel and the more you will use your talent to produce outstanding results.
The most profound discoveries often come from the simplest observations.
The presence of those seeking the truth is infinitely to be preferred to the presence of those who think they've found it.
It is not shame for a man to learn that which he knows not，whatever his age.