If the genius of invention were to reveal to-morrow the secret of immortality, of eternal beauty and youth, for which all humanity is aching, the same inexorable agents which prevent a mass from changing suddenly its velocity would likewise resist the force of the new knowledge until time gradually modifies human thought.
Truly, there are terrible primal arcana of earth which had better be left unknown and unevoked; dread secrets which have nothing to do with man, and which man may learn only in exchange for peace and sanity; cryptic truths which make the knower evermore an alien among his kind, and cause him to walk alone on earth.
You can't lose what you serve. That's the secret. What you serve, you can't lose. What you don't serve and what you try to hold onto, you can't hold onto. It's always slipping out of your fingers.
Science ... looks skeptically at all claims to knowledge, old and new. It teaches not blind obedience to those in authority but to vigorous debate, and in many respects that's the secret of its success.
My turning point was my pilgrimage to Santiago de Compostela. It was then that I, who had dedicated most of my life to penetrate the 'secrets' of the universe, realized that there are no secrets. Life is and will always be a mystery.
It is through the dispositions of an army that its condition may be discovered. Conceal your dispositions, and your condition will remain secret, which leads to victory,; show your dispositions, and your condition will become patent, which leads to defeat.
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.
Like a flash of lightning and in an instant the truth was revealed. I drew with a stick on the sand the diagrams of my motor. A thousand secrets of nature which I might have stumbled upon accidentally I would have given for that one which I had wrestled from her against all odds and at the peril of my existence.