— Marcus Tullius Cicero Roman philosopher and statesman -106 - -43 a.C.
Context: The distinguishing property of man is to search for and to follow after truth. Therefore, when relaxed from our necessary cares and concerns, we then covet to see, to hear, and to learn somewhat; and we esteem knowledge of things either obscure or wonderful to be the indispensable means of living happily.* From this we understand that truth, simplicity, and candour, are most agreeable to the nature of mankind. To this passion for discovering truth, is added a desire to direct; for a mind, well formed by nature, is unwilling to obey any man but him who lays down rules and instructions to it, or who, for the general advantage, exercises equitable and lawful government. From this proceeds loftiness of mind, and contempt for worldly interests.
Book I, section 13
Variant translation: Above all, the search after truth and its eager pursuit are peculiar to man. And so, when we have leisure from the demands of business cares, we are eager to see, to hear, to learn something new, and we esteem a desire to know.