In our reasonings concerning matter of fact, there are all imaginable degrees of assurance, from the highest certainty to the lowest species of moral evidence. A wise man, therefore, proportions his belief to the evidence.

David Hume

Mots clés wisdom science certainty doubt reason belief facts skepticism reasoning evidence proportion assurance degrees

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If you need to invoke your academic pedigree or job title for people to believe what you say, then you need a better argument.

Neil deGrasse Tyson

Mots clés persuasion arguments degrees credentials job-titles

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