It is a paradox that every dictator has climbed to power on the ladder of free speech. Immediately on attaining power each dictator has suppressed all free speech except his own.

Hoover’s remark warns that authoritarian movements often exploit open debate, a free press, and permissive political competition to gain legitimacy and mobilize supporters. The “ladder of free speech” suggests that liberties can be used instrumentally by would‑be dictators—who present themselves as merely another voice—until they secure control of the state. The second sentence underscores the recurring pattern: once power is consolidated, pluralism becomes a threat, so dissenting speech is curtailed while propaganda is amplified. The paradox is not that free speech causes dictatorship, but that free institutions can be vulnerable when citizens and elites fail to defend them against actors who do not intend to reciprocate those freedoms.