"The person who says it cannot be done should not interrupt the person doing it."

"If we don't change our direction we're likely to end up where we're headed."

"When you drink the water, remember the spring."

"The gem cannot be polished without friction, nor man perfected without trials."

"An inch of time cannot be bought with an inch of gold."

"He who strikes the first blow admits he's lost the argument."

"Take hold lightly; let go lightly. This is one of the great secrets of felicity in love."

"Make your bargain before beginning to plow."

"The best armor is to keep out of range."

"If you wish your merit to be known, acknowledge that of other people."

"Don't make use of another's mouth unless it has been lent to you."

"If you refuse to be made straight when you are green, you will not be made straight when you are dry."