Do not make Mistakes about Character. That is the worst and yet easiest error. Better be cheated in the price than in the quality of goods. In dealing with men, more than with other things, it is necessary to look within. To know men is different from knowing things. It is profound philosophy to sound the depths of feeling and distinguish traits of character. Men must be studied as deeply as books.

Knowledge without wisdom is double folly.

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

The wise are always impatient, for he that increases knowledge increases impatience of folly.

Cultivate those who can teach you.

Hear, see, and be silent.

True knowledge lies in knowing how to live.