Life! Life! Don't let us go to life for our fulfilment or our experience. Life makes us pay too high a price for its wares, and we purchase the meanest of its secrets at a cost that is monstrous and infinite.
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.
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.
I am more afraid of deserving criticism than of receiving it. I stand in awe of my own opinion. The secret demerits of which we alone, perhaps, are conscious, are often more difficult to bear than those which have been publicly censured in us, and thus in some degree atoned for.
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.
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.