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.
Poorly secured nuclear material in the former Soviet Union, or secrets from a scientist in Pakistan could help build a bomb that detonates in Paris. The poppies in Afghanistan become the heroin in Berlin. The poverty and violence in Somalia breeds the terror of tomorrow.
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.
For the secret of man's being is not only to live but to have something to live for. Without a stable conception of the object of life, man would not consent to go on living, and would rather destroy himself than remain on earth, though he had bread in abundance.
The powers of the mind should be concentrated and the mind turned back upon itself; as the darkest places reveal their secrets before the penetrating rays of the sun, so will the concentrated mind penetrate its own innermost secrets.
You either choose this method of passing the evening because you are in each other's confidence, and have secret affairs to discuss, or because you are conscious that your figures appear to the greatest advantage in walking;— if the first, I should be completely in your way, and if the second, I can admire you much better as I sit by the fire.
The great secret of morals is Love; or a going out of our own nature, and an identification of ourselves with the beautiful which exists in thought, action, or person, not our own.
All tastes have the quality of being in some way artificial and invented. The secret of life is to have enough detachment from your tastes and your values to see that they are a little bit absurd.