"Man is born free; and everywhere he is in chains."

"All my misfortunes come from my having had too good an opinion of myself."

"The most useful and honorable science is that of man; and the most properly studied book is the world."

"What is called liberty is the right to do anything that harms no one else."

"The strongest is never strong enough to be always the master, unless he transforms strength into right, and obedience into duty."