Self knowledge is the beginning of self improvement.

It takes more to make one sage today than it did to make the seven of Greece. And you need more resources to deal with a single person these days than with an entire nation in times past.

Advice is sometimes transmitted more successfully through a joke than grave teaching.

There is no wilderness like a life without friends.

You should aim to be independent of any one vote, of any one fashion, of any one century.

Self-reflection is the school of wisdom.

Make your friends your teachers and mingle the pleasures of conversation with the advantages of instruction.