I can, therefore I am.

To know oneself, one should assert oneself.

Know or listen to those who know.

Do not weep do not wax indignant. Understand.

Either you run the day or the day runs you.

Without hard work, nothing grows but weeds.

By failing to prepare, you are preparing to fail.

Be thine own palace, or the world's thy jail.

The secret of getting ahead is getting started.