"A thorn defends the rose, harming only those who would steal the blossom."

"Don't open a shop unless you like to smile."

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

"Better to light a candle than to curse the darkness."

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

"A diamond with a flaw is worth more than a pebble without imperfections."

"When you have given nothing, ask for nothing."

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

"Dwell not upon thy weariness, thy strength shall be according to the measure of thy desire."

"When you go to buy, use your eyes, not your ears."

"Praise youth and it will prosper."

"Speak the truth, but leave immediately after."