My first two is the name for a circle's fundamental ratio, my last two are the symbol for an element, used to make signs stand out at night. Together, I'm a synonym for yearn.

I give and take A fine line between faith and recklessness You stand more to lose A zero sum game I am

an irrational, transcendental real constant defined as the ratio of a circle’s Euclidean circumference to its diameter, invariant under similarity transformations. It has a non-terminating, non-repeating base-ten expansion, is not a root of any nonzero polynomial with rational coefficients, appears as a fundamental constant in trigonometric, analytic, and Fourier frameworks, and arises as a limiting value in infinite series, products, integrals, and measure-theoretic formulations across geometry, complex analysis, probability theory, and topology. March Fourteenth is a start, or a round treat filled with savory or sweet

Generally I am round and often delicious, split me into two unequal sections and each will be transcendental.

I listen before I speak, I weigh without a scale. With words alone I set things free or seal another’s tale.