The Prophet of Islam said that wisdom is the lost property of the believer. He should accept it wherever he finds it. (Sunan al-Tirmidhi, Hadith No. 2687) This hadith explains the universality of knowledge. It means that knowledge, wherever it may be belongs equally to all human beings. It is not the monopoly of a particular person or group. It can be likened to the sun. Everyone has the right to receive light from it. Without this concept of the universality of knowledge, the progress of knowledge would just not be possible. Wisdom is the ability to judge or discern what is true or right. Wisdom, the greatest asset of all men and women, is likewise a common treasure house. The treasure house of wisdom is so vast that however much it is used, its reservoir will never be exhausted. Knowledge is a vast lake which satisfies the thirst of every seeker.