Really, the fundamental, ultimate mystery -- the only thing you need to know to understand the deepest metaphysical secrets -- is this: that for every outside there is an inside and for every inside there is an outside, and although they are different, they go together.
Tremendous purity, tremendous renunciation, is the one secret of spirituality. “Neither through wealth, nor through progeny, but through renunciation alone is immortality to be reached,” say the Vedas. “Sell all that thou hast and give to poor, and follow me,” says the Christ. So all great saints and prophets have expressed it, and have carried it out in their lives. How can great spirituality come without renunciation?
A monopoly granted either to an individual or to a trading company has the same effect as a secret in trade or manufactures. The monopolists, by keeping the market constantly understocked, by never fully supplying the effectual demand, sell their commodities much above the natural price, and raise their emoluments, whether they consist in wages or profit, greatly above their natural rate.
As long as you don't fly openly in the face of society, society doesn't ask any inconvenient questions; and it makes precious short work of the cads who do. There are no secrets better kept than the secrets everybody guesses.
She was sad with an obscure sadness of which she had not the secret herself. There was in her whole person the stupor of a life ended but never commenced.
If the pros at Sun had had a chance to fix Java, the world would be a much more pleasant place. This is not secret knowledge. It's just secret to this pop culture.