None Are Deceived But They That Confide.

All Cats Are Gray In The Dark.

If You Have A Bald Head Don't Walk Out In The Sun Because You Will Get Burned.

What Science Can There Be More Noble, More Excellent, More Useful For Men, More Admirably High And Demonstrative, Than This Of Mathematics?

To Err Is Human, To Repent Divine; To Persist Devilish.

Were The Offer Made True, I Would Engage To Run Again, From Beginning To End, The Same Career Of Life. All I Would Ask Should Be The Privilege Of An Author, To Correct, In A Second Edition, Certain Errors Of The First.