Music expresses that which cannot be put into words and that which cannot remain silent.
As I would not be a slave, so I would not be a master. This expresses my idea of democracy.
Action expresses priorities.
Any reviewer who expresses rage and loathing for a novel is preposterous. He or she is like a person who has put on full armor and attacked a hot fudge sundae.
A technique succeeds in mathematical physics, not by a clever trick, or a happy accident, but because it expresses some aspect of a physical truth.
Mathematics expresses values that reflect the cosmos, including orderliness, balance, harmony, logic, and abstract beauty.