Happiness lies not in what we have, but in what we enjoy.
读书求明理,须让自己满意;与别人谈道理,须令别人佩服。
Quality is not an act, it is a habit.
要享受自由,我们必须控制自己。
Life would be too smooth if it had no rubs in it.
The greatest gift is the gift of life itself.