Caesar
but i am constant as the northern star,
of whose true-fix'd and resting quality
there is no fellow in the firmament.
the skies are painted with unnumber'd sparks,
they are all fire and every one doth shine,
but there's but one in all doth hold his place:
so in the world; 'tis furnish'd well with men,
and men are flesh and blood, and apprehensive;
yet in the number i do know but one
that unassailable holds on his rank,
unshaked of motion: and that i am he,

of what constancy does caesar speak?

a. antony's tested and enduring friendship and loyalty
b. the ever-present importance of the roman republic
c. cassius' pretense at friendship that hides his betrayal
d. his own dedication to roman law and justice over personal flattery