Holier Than Thou - Biblical Contradictions

Is wisdom a blessing or a cause of grief?

Proverbs 3:13-18, "Blessed is the man who finds wisdom, the man who gains understanding, for she is more profitable than silver and yields better returns than gold. She is more precious than rubies; nothing you desire can compare with her. Long life is in her right hand; in her left hand are riches and honor. Her ways are pleasant ways, and all her paths are peace. She is a tree of life to those who embrace her; those who lay hold of her will be blessed."

Ecclesiastes 1:12-18, "I, the Teacher, was king over Israel in Jerusalem. I devoted myself to study and to explore by wisdom all that is done under heaven. What a heavy burden God has laid on men! I have seen all the things that are done under the sun; all of them are meaningless, a chasing after the wind. What is twisted cannot be straightened; what is lacking cannot be counted. I thought to myself, 'Look, I have grown and increased in wisdom more than anyone who has ruled over Jerusalem before me; I have experienced much of wisdom and knowledge.' Then I applied myself to the understanding of wisdom, and also of madness and folly, but I learned that this, too, is a chasing after the wind. For with much wisdom comes much sorrow; the more knowledge, the more grief."

According to Proverbs, wisdom is a blessing which brings peace and is to be sought, however, according to the same author in Ecclesiastes, wisdom is a chasing after the wind which brings grief and sorrow.

"Sorrow is better than laughter: for by the sadness of the countenance the heart is made better. The heart of the wise is in the house of mourning; but the heart of fools is in the house of mirth." (Ecclesiastes 7:3-4, KJV)

"Then I commended mirth, because a man hath no better thing under the sun, than to eat, and to drink, and to be merry: for that shall abide with him of his labour the days of his life, which God giveth him under the sun." (Ecclesiastes 8:15, KJV)