I am a great believer in luck, and I find the harder I work the more I have of it.

It's called political economy because it is has nothing to do with either politics or economy.

The student of arithmetic who has mastered the first four rules of his art, and successfully striven with money sums and fractions, finds himself confronted by an unbroken expanse of questions known as problems.

Men are able to trust one another, knowing the exact degree of dishonesty they are entitled to expect.

Being a specialist is one thing, getting a job is another.

It may be those who do most, dream most.

To write well it is first necessary to have something to say.