I hear and I forget. I see and I remember. I do and I understand.

To study and not think is a waste. To think and not study is dangerous.

When you know a thing, to hold that you know it, and when you do not know a thing, to allow that you do not know it - this is knowledge.

Reading without thinking will confuse you.Thinking without reading will place you in danger.

A happy union with wife and child is like the music of lutes and harps.

The demands that a great man makes are on himself; those of a petty man are upon others.

For benefits return benefits; for injuries return justice without any admixture of revenge.