Never complain and never explain.
It's always too early to quit.
Without hard work, nothing grows but weeds.
The secret of getting ahead is getting started.
Who seeks shall find.
By failing to prepare, you are preparing to fail.
Begin to be now what you will be hereafter.
If you've got a talent, protect it.
Leap, and the net will appear.
The wise does at once what the fool does at last.
I travel all over the country making speeches for people I believe in.
Teaching was the hardest work I had ever done, and it remains the hardest work I have done to date.