Category: reason


is never a sufficient 

reason on its own. 

—Red Leaf Haiku by © John Clark Helzer

“Improvements in reason and philosophy can only be owing to a land of liberty.” – David Hume

“We must not overlook the difference that it makes whether we argue from or to first principles.” – Aristotle

“There are those who reason well, but they are greatly outnumbered by those who reason badly.” – Galileo Galilei

“Not to be absolutely certain is, I think, one of the essential things in rationality.” – Bertrand Russell

“Our theory of truth must be such as to admit of its opposite, falsehood. Many philosophers have failed adequately to satisfy this condition.” – Bertrand Russell

“Although all our knowledge begins with experience, it does not follow that it arises from experience.” – Immanuel Kant

“To have doubted one’s own first principles is the mark of a civilized man.” – Oliver Wendell Holmes

“Accuracy is, in every case, advantageous to beauty, and just reasoning to delicate sentiment.” – David Hume

“The rules of morality are not the conclusion of our reason.” – David Hume