A dogma will thrive in soil where the truth could not get root.

Washburn’s aphorism contrasts “dogma” (fixed belief held by authority or habit) with “truth” (something that must be tested, understood, and assimilated). The metaphor of soil suggests that ideas do not flourish in a vacuum: they require conditions—education, openness, intellectual humility, and freedom of inquiry. Where those conditions are absent, truth cannot “take root,” and rigid doctrines can spread instead, because they demand less investigation and can be sustained by social pressure or institutional power. The line also implies a warning: the success of a belief system is not evidence of its truth; it may be evidence of an environment hostile to critical examination.