David Hume

"Beauty in things exists in the mind which contemplates them"

"Custom is the great guide of human life"

"A wise man proportions his belief to the evidence"

"He is happy whose circumstances suit his temper"

"The life of man is of some importance to himself"

"Nothing is more useful to us in life than the security of true friendship"

"Every passion is not susceptible of the same increase and alterations"

"We must renounce the theory that the unaided individual mind can arrive at truth"

"There is no such thing as a free lunch"

"The mind is a kind of theatre where perceptions make their appearance"

"Knowledge and conversation are his natural appetite"

"Courage and resolution are noble qualities"

"All the sciences have a relation to human life"

"Ambition is a powerful passion"

"Education makes a greater difference between man and man than nature makes between man and brute"

"The heart has its reasons which reason knows nothing of"

"Liberty is the perfection of civil society"

"Time is a powerful force"

"Human nature is the subject matter of all science"

"When I am convinced of any principle, I am bound by it"

"Art requires both taste and execution"

"The most lively thought is still inferior to the dullest sensation"

"Success in business requires two things: a winning competitive strategy and superb organizational execution"

"Our senses are all of them related to those objects to which they are adapted"

"Imagination was given to man to compensate him for what he is not"

"We ought to prefer the latter choice"

"Mercy is among the most laudable virtues"

"Reason is and ought to be the slave of the passions"

"The only true wisdom is in knowing you know nothing"

"Probability is the very guide of life"