If you're going through hell, keep going.

To know oneself, one should assert oneself.

It's always too early to quit.

Know or listen to those who know.

The wise does at once what the fool does at last.

By failing to prepare, you are preparing to fail.

Things do not happen. Things are made to happen.

Either you run the day or the day runs you.

Be gentle to all and stern with yourself.