Know or listen to those who know.

What you do today can improve all your tomorrows.

The secret of getting ahead is getting started.

Quality is not an act, it is a habit.

Well done is better than well said.

Be gentle to all and stern with yourself.

Do not weep do not wax indignant. Understand.

To know oneself, one should assert oneself.

It's always too early to quit.