Wishing to be friends is quick work, but friendship is a slow ripening fruit. – Aristotle

There is some self-interest behind every friendship. There is no friendship without self-interests. This is a bitter truth. – Chanakya

Ones life has value so long as one attributes value to the life of others, by means of love, friendship, indignation and compassion. – Simone de Beauvoir

A friend is, as it were, a second self. – Marcus Tullius Cicero