"That is true wisdom, to know how to alter one's mind when occasion demands it."

"Their silence is sufficient praise."

"What is done let us leave alone."

"I bid him look into the lives of men as though into a mirror, and from others to take an example for himself."

"In fact, nothing is said that has not been said before."

"You believe that easily which you hope for earnestly."

"Judge of a man by his questions rather than by his answers."

"If you ask too many questions, you will find no answers, only more questions."

"There are two sides to every question."

"A thinker sees his own actions as experiments and questions--as attempts to find out something. Success and failure are for him answers above all."

"Ask questions from your heart and you will be answered from the heart."

"Look at all the sentences which seem true and question them."