Wisdom is traced not only in the human being, but even in the beasts and birds, in their affection, in their instinct. Very often it is most difficult for man to imitate fully the work which birds do in weaving their nests. Even the insects do wonderful work in preparing a little abode for themselves which is beyond man's art and skill. Besides this, if one studies nature, after keen observation and some contemplation upon it one will find that there is perfect wisdom behind it. Once man has thought on the subject, he can never, however materialistic he may be, deny the existence of God. Man's individuality is proved by his wisdom and distinguished by comparison. The wisdom of God, being perfect, is unintelligible to man. The glass of water cannot imagine how much water there is in the sea. If man would realize his limitation he would never dare question the existence of God.