The more intelligent a person is, the more he discovers kindness in others. For nothing enriches the world more than kindness. It makes mysterious things clear, difficult things easy, and dull things cheerful.

A smart man isn't necessarily one who knows all the answers, but knows where to find them.

Anyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.

Everything has its limit - iron ore cannot be educated into gold.

Silence is the only answer you should give to the fools. Where ignorance speaks, intelligence should not give advices.

One man with a head on his shoulders is worth a dozen without.