It might start with your finding a set of ideas that you find attractive, which means that they evoke a resonance with remembered thoughts and experiences, with questions that were left unanswered but latent after some past transition in knowledge, some ordinary initiation or awakening which contributed to bringing about life as you know it, this life. And so something lights up, at least a flickering light appears over a usually dark mental landscape, or more accurately a metaphysical landscape, which means all of what you take to be real, what must also be real if what you are certain is real - yourself, others, time, death and so on - is to fully be what it is. This landscape is far larger than you thought it was, although you seem to have known that about it once and forgotten that it was so, and at last you feel as if you can breathe, except that it's over in a flash. And it is the ideas that prompted this that become important to you and not what you saw, not the strange event of being in a landscape at the same time as you're sitting in a diner, or on a bus, or lying in bed, and anyway the landscape in those ideas is so much larger even than the one you glimpsed - if less real, by definition - that they draw forth something more than agreement, namely belief. But belief, however strong, is not the same thing at all, it is more like a ticket, for a ride, an entertainment, an elaborate digression, a life story, that at best only brings you back to the place where you left off, rich in experience, but unchanged.