The custom of believing what others believe, and of doing what others do, is the most powerful obstacle to the discovery of truth.
Cogito ergo sum
Attributed, though exact source is debated
Unknown
Found in 1 providers: grok
Cross Reference
1 source
"All that is needed to arrive at the truth is good sense, which is naturally equal in all men."
Shocking"I am a thinking thing, a substance whose whole essence or nature consists in thinking, and there is no need of any place, nor does it depend on any material thing."
Controversial"The body is a machine."
Shocking"I can easily conceive that there is nothing in the world, that there is no heaven, no earth, no minds, no bodies; is it not then likewise true that I do not exist?"
Controversial"The greatest good is to live without pain."
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