The Fall of the Athenian Empire-(A New History of the Peloponnesian War) Donald Kagan - (1987)

170 THE FALL OF THE ATHENIAN EMPIRE
Thrasybulus, one of the original authors of the plan. 46 His inclusion
in the very small number of those foremost in their opposition to the
conspirators is hard to understand, unless the Samian democrats saw
important differences among the men who had started the movement.
We must assume, although Thucydides does not say so, that Thrasybulus
publicly renounced his membership after the inner circle turned
away from Alcibiades and that he quickly became known as an enemy
to those who plotted to establish an oligarchy without offering Alcibiades,
Persian support, and victory over the Peloponnesians in return.
To the people on Samos, natives and Athenians, the members of the
movement to alter the democracy in Athens and Samos were not all
the same. Some were true oligarchs; others were friends of democracy
who grudgingly went along with events; at least one had publicly
denounced the movement and had become its notorious enemy.
The Samian democrats pleaded with the Athenians they trusted to
help save them and preserve for Athens the island crucial for the
survival of its empire, and their faith was justified. The chosen Athenians
went individually to spread the word to reliable Athenian soldiers
and especially to the crew of Athens' messenger ship Para/us,
whose crew was well known for its adherence to the democracy and
its hatred for oligarchy.