Baltasar Gracián y Morales, S.J. (Spanish: [baltaˈsaɾ ɣɾaˈθjan]; 8 January 1601 – 6 December 1658), better known as Baltasar Gracián, was a Spanish Jesuit and Baroque prose writer and philosopher. He was born in Belmonte, near Calatayud (Aragón). His writings were lauded by Schopenhauer and Nietzsche.
A wise man gets more use from his enemies than a fool from his friends.
Friendship multiplies the good of life and divides the evil.
If those who owe us nothing gave us nothing, how poor we would be.