When the body functions spontaneously, that is called instinct. When the soul functions spontaneously, that is called intuition. They are alike and yet far away from each other. Instinct is of the body—the gross; and intuition is of the soul—the subtle. And between the two is the mind, the expert, which never functions spontaneously. Mind means knowledge. Knowledge can never be spontaneous. Instinct is deeper than intellect and intuition is higher than intellect. Both are beyond the intellect, and both are good.

Intuition is existential. Instinct is natural. Intellect is just groping in the dark. The faster you move beyond intellect, the better; intellect can be a barrier to those who think nothing is beyond it. Intellect can be a beautiful passage for those who understand that there is certainly something beyond it.

Intellect makes everything a problem and knows no solution at all. Instinct never creates any problem and does not need any solution; it simply functions naturally. Intuition is pure solution, it has no problems. Intellect is only problems, it has no solution. If you rightly see the division, it is simple to understand: unless instinct is available, you will be dead. And unless intuition is available, your life has no meaning—you just drag on. It is a kind of vegetation. Intuition brings meaning, splendor, joy, blessings. Intuition gives you the secrets of existence, brings a tremendous silence, serenity, which cannot be disturbed and which cannot be taken away from you. With instinct and intuition functioning together, you can also use your intellect for right purposes. Otherwise you have only means but no ends. Intellect has no idea of any ends. 

The very word intuition has to be understood. You know the word tuition—tuition comes from outside, somebody teaches you, the tutor. Intuition means something that arises within your being; it is your potential, that’s why it is called intuition. Wisdom is never borrowed, and that which is borrowed is never wisdom. Unless you have your own wisdom, your own vision, your own clarity, your own eyes to see, you will not be able to understand the mystery of existence.

I am in favor of the instinct. And this is one of the secrets I want to reveal to you: if you are in total favor of instinct, it will be easy to find the way toward intuition. Because they are both the same, even though functioning on different levels—one functions on the material level, another functions on the spiritual level. To accept your instinctive life with absolute joy, without any guilt, will help you to open the doors of intuition—because they are not different, just their planes are different. And just as instinct functions beautifully, silently, without any noise, so does intuition function—and even more silently, far more beautifully.

Intuition: Knowing Beyond Logic (Osho)