Hume, David

"Wars, when just, are generally short; when unjust, are often long."

"A man of business is not so much a man of reasoning as of action."

"The sceptical doubts about sensory experience are not to be removed by argument alone."

"Reason alone can never give rise to any original active force."

"The practice of justice is the only rational maxim of life."

"Every art and every inquiry, and similarly every action as well as purpose, may be said to aim at some good."

"The mind is of a kind that cannot exist alone, apart from the world."

"Good and evil are nothing but the sentiments excited by social and moral circumstances."

"A man may be very religious and still be vicious in his conduct towards men."

"What's past is prologue, but the future remains unwritten."

"The ordinary commerce of life gives us occasion to adopt the notion of identity and continuance."

"The true philosophical temper is not to be content with merely observing facts, but to investigate their causes."

"All philosophy lies in two words, suspect thyself."

"The greatest monuments of human genius lie not in stone but in the minds of thinking men."

"Adversity reveals character; prosperity conceals it."

"The mind abhors a vacuum and will fill it with imagination if facts are not available."

"In all matters we must distinguish between the appearance of a thing and its reality."

"Liberty and necessity are compatible, and the true system of the universe rests upon their compatibility."

"To learn anything, one must first learn how to learn."

"Mankind are so similar in every age and country, that nothing can be deduced from the particular circumstances of each age and country alone."

"The passion for true knowledge is the noblest of all the passions."

"We must distinguish between philosophical and popular senses of justice."

"The mind is not present to the body in the way that the soul is present to the body."