My object in life is to dethrone God and destroy capitalism. 

Karl Marx 

« If we did not have rational souls, we would not be able to believe. » 

Saint Augustine

« He is a wise man who does not grieve for the things which he has not, but rejoices for those which he has. » Epictetus


« We should feel sorrow, but not sink under its oppression. »
Confucius



« I have always thought the actions of men the best interpreters of their thoughts. »
John Locke



link: http://philosophical-quotes.com/10.html