A man's value to the community primarily depends on how far his feelings, thoughts, and actions are directed towards promoting the good of his fellows.
Man owes his strength in the struggle for existence to the fact that he is a social animal.
Show me a satisfied man, and I'll show you a failure.
Condemnation without investigation is the height of ignorance
A happy man is too satisfied with the present to dwell too much on the future.
I do know that kind fate allowed me to find a couple of nice ideas after many years of feverish labor.