If Buddha said not to have any desires, why did he desire for peace of mind and life in jungle?

If Buddha said not to have any desires, why did he desire for peace of mind and life in jungle? Your question is a bit wrong. It was not Buddha who had the desire to go into Jungle to search for the peace of mind. It was Siddhārtha Gautama. When he was enlightened, he became Buddha - the awakened one ! I will give it a try what he really wanted to do and why his approach was absolutely correct i.e., he was born to a king and lived a life of luxury. And then only he felt like the need to look for the real ecstasy and truth of life and not which is just limited to senses or materialism. You must have seen the above picture or heard of the quote. Initially, to anyone it may appear that the quote is trying to justify that Money is everything life. But wait, there is a hidden meaning in it. Suppose you're a beggar and I tell you money is not everything in life. Will you believe me ? Very unlikely. But once you have earned enough money in life, then only you will be able to accept or perceive money is not actually everything in life. As they say, some people are so poor that all they got in their life is money. Similarly, Siddhartha was like you and me till he was leading a life of luxury. Yet he had the desire which money was not able to satiate. This desire - this craving inspired him to look for peace. And then he became Buddha ! All desires for happiness. That is the goal of desire, isn't it? But how often your desire lead you to the goal ? Have you thought about the nature of desire? It simply means tomorrow, and not now. But joy is never tomorrow; it is always now. How can you have desires when you are joyful? And how can you be really joyful right now when you have desires? Desires appears to lead you to happiness but in fact it cannot. That is why desire is maya - illusion.