Failure can be bought on easy terms; success must be paid for in advance

The gratification of a thoughtless pleasure soon evaporates; the pleasure of a gratifying thought never ends.

The only new ideas that are not subject to our skepticism or suspicion are our own.

Strangers are what friends are made of.

After our ages-long journey from savagery to civility, let's hope we haven't bought a round-trip ticket.

The wheel was invented so we could move faster. Credit was invented so we would have to.

Saying what we think gives us a wider conversational range than saying what we know.