Cassius from bondage will deliver Cassius:

Therein, ye gods, you make the weak most strong;

Therein, ye gods, you tyrants do defeat:

Nor stony tower, nor walls of beaten brass,

Nor airless dungeon, nor strong links of iron,

Can be retentive to the strength of spirit;

But life, being weary of these worldly bonds,

Never lacks power to dismiss itself.

If I know this, know all the world besides,

That part of tyranny that I do bear

I can shake off at pleasure."

-William Shakespeare, Julius Caesar

Cassius' consuming hatred of Caesar is difficult to understand, even for him. Probably it is simply a manifestation of Cassius' consuming hatred of everyone and everything. Caesar is, to Cassius, a personification of the forces which he feels have kept him down throughout his life.