Men do not stumble over mountains, but over molehills.

He that is down can fall no lower.

I have not failed. I've just found 10,000 ways that won't work.

Quoth Hudibras, I smell a rat; Ralpho, thou dost prevaricate.

For now the field is not far off Where we must give the world a proof Of deeds, not words.

He was in Logic, a great critic, Profoundly skill'd in Analytic; He could distinguish, and divide A hair 'twixt south and south-west side.