A serious-minded man enjoys a good laugh now and then.
seriousquotes
No serious book can now be sure of surviving.
It isn’t easy to understand exactly what she is saying, for one doesn’t know whether she is speaking ironically or seriously, it’s mostly serious, but sounds ironic. – “Stop interpreting everything!” said K.
interpreting / ironic / serious / understand
A serious and good philosophical work could be written consisting entirely of jokes.
good / jokes / philosophical / serious