Quote by Miguel de Unamuno
"Nature teaches us that nothing is permanent except change itself."
More from Miguel de Unamuno
"The practical man is a man of traditions."
"Those who believe that they believe in God, but without passion in the heart, without anguish of mind, without uncertainty, without doubt, and even at times without despair, believe only in the God idea, not in God himself."
"It is often a man's imagination that makes him happy."
"The greatest tragedy of the individual is his solitude."