Existence would be intolerable if we were never to dream.
A person is never happy except at the price of some ignorance. [The ability to focus on positives and distract your mind from negatives for at least a time is a necessary skill for being happy.]
Ignorance and error are necessary to life, like bread and water.
Change is the essence of life.
Time deals gently only with those who take it gently.
Awaken people's curiosity. It is enough to open minds, do not overload them. Put there just a spark.