To know oneself, one should assert oneself.
Always desire to learn something useful.
Be kind whenever possible. It is always possible.
What you do today can improve all your tomorrows.
Expect problems and eat them for breakfast.
If you've got a talent, protect it.
You never know what motivates you.
Only the educated are free.
The secret of getting ahead is getting started.
Be gentle to all and stern with yourself.
The diversity of the phenomena of nature is so great, and the treasures hidden in the heavens so rich, precisely in order that the human mind shall never be lacking in fresh nourishment.