"In some remote corner of the universe, poured out and glittering among innumerable solar systems, there once was a star on which clever animals invented knowledge."
"He who has a why to live can bear almost any how."
"The true man wants two things: danger and play. For that reason he wants woman, as the most dangerous plaything."
"Love is blind; friendship closes its eyes."
"The man of knowledge must be able not only to love his enemies but also to hate his friends."
"We love life, not because we are used to living but because we are used to loving."