There's the experience. There's one's attempt to say something about it. What one says rarely does justice to what happened. That's where poetry and art come in handy, with their ability to evoke what goes beyond the rules of grammar or mathematics. Discussions about being, thought, representation, language go back thousands of years. Maybe it started during neanderthol times. The discussion could be useful in opening the mind. When one understands the limitations of thought and expression, one senses something that lies beyond whatever one might say or think. There's also one's intuition, which is often difficult to put into words. How does one do justice to the first glow from a pint of beer on an empty stomach after a long day?