Never complain and never explain.
Go for it now. The future is promised to no one.
Be thine own palace, or the world's thy jail.
Without hard work, nothing grows but weeds.
By failing to prepare, you are preparing to fail.
To know oneself, one should assert oneself.
The most effective way to do it, is to do it.
You never know what motivates you.
If you've got a talent, protect it.
Begin to be now what you will be hereafter.
That is a secondary teacher conception - the writer as an observer.