Quote by Isaiah Berlin
"Perseverance is often just the refusal to admit defeat, even when defeat is the only rational choice."
More from Isaiah Berlin
"The greatest achievement of the human mind is the understanding that the world is very strange and beautiful."
"Liberty is liberty, not equality or fairness or justice or culture, or human happiness or a quiet conscience."
"If the ends do not justify the means, what does?"
"One cannot be deeply responsive to the world without being saddened very often."