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"There is a demand in these days for men who can make wrong appear right."

"Charity begins at home."

"Their silence is sufficient praise."

"Moderation in all things."

"I am a man, and whatever concerns humanity is of interest to me."

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

"A wise man's question contains half the answer."

"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."

"The outcome of any serious research can only be to make two questions grow where only one grew before."

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

"In all affairs it's a healthy thing now and then to hang a question mark on the things you have long taken for granted."