Speak well of the sun, but know that it can harm you;when enraged, it is pitiless. Speak well of the ocean, but know that it can injure you; when angry, it is merciless. Speak well of the wind, but know that it can wound you; when provoked, it is ruthless.

Wisdom is the greatest speaker in history;nature, second.Folly is the worst speaker in history;fools, second.

Understanding is important for studying,knowledge is important for teaching,and wisdom is important for living.

Understanding is to knowledge what the flesh is to the body. Insight is to wisdom what life is to the soul.

Knowledge makes you strong,understanding makes you formidable,wisdom makes you powerful,and love makes you invincible.

A lion does not take orders from sheep.

Wisdom is more faithful than a woman,and knowledge is more faithful than a friend.Folly is more oppressive than a tyrant,and evil more overwhelming than fury.

Liars corrupt knowledge,and fools pervert wisdom,but the wise hallow both.Knowledge holds the truth.

Scholars love knowledge.Philosophers love wisdom.The most knowledgeable become professors.The most wise become sages.