From Henry David Thoreau’s journal dated January 31, 1853:
A man is wise with the wisdom of his time only, and ignorant with its ignorance. Observe how the greatest minds yield in some degree to the superstitions of their age.
Of course, the first thing that popped into my mind after reading this entry was the otherwise smart, highly educated people today who are completely invested in the climate change hoax. Even great minds are not completely immune to folly.