That we all have souls and therefore have the inherent ability to understand all the great truths of the universe but are hampered, by varying degrees, by our physical body (i.e. the brain). Therefore, when we die we comprehend the answers to whatever questions that may have plagued us in our lifetimes. This is why there are "geniuses"; their synapses fire faster than most. Death is the great equalizer in more ways than one.
Yes, I admit to having once done the drug scene, but that was a long time ago. Really.