We tell lies, yet it is easy to show that lying is immoral.

Reason is not measured by size or height, but by principle.

Man is not worried by real problems so much as by his imagined anxieties about real problems

What is a child? Ignorance. What is a child? Want of instruction.

It’s time to stop being vague. If you wish to be an extraordinary person, if you wish to be wise, then you should explicitly identify the kind of person you aspire to become.

When our friends are present we ought to treat them well; and when they are absent, to speak of them well.

No man is disturbed by things, but by his opinion about things.