Epictetus, Golden Sayings 124

Nor did the hero weep and lament at leaving his children orphans. 

For he knew that no man is an orphan, but it is the Father that cares for all continually and for evermore. Not by mere report had he heard that the Supreme God is the Father of men: seeing that he called Him Father, believing Him so to be, and in all that he did had ever his eyes fixed upon Him.

Wherefore in whatsoever place he was, there it was given him to live happily.