Success always necessitates a degree of ruthlessness. Given the choice of friendship or success, I'd probably choose success.
FRIENDSHIP, SUCCESS ALWAYS NECESSITATES A DEGREE OF RUTHLESSNESS
Think where man's glory most begins and ends, and say my glory was I had such friends.
One of the most beautiful qualities of true friendship is to understand and to be understood.
Friendship multiplies the good of life and divides the evil.
FRIENDSHIP, FRIENDSHIP MULTIPLIES THE GOOD
I don't need a friend who changes when I change and who nods when I nod my shadow does that much better.
Nothing so fortifies a friendship as a belief on the part of one friend that he is superior to the other.
FRIENDSHIP, ONE FRIEND THAT HE IS SUPERIOR TO OTHER