Only the educated are free.
After a storm comes a calm.
If you think you can do it, you can.
You never know what motivates you.
To know oneself, one should assert oneself.
It's always too early to quit.
Leap, and the net will appear.
Be kind whenever possible. It is always possible.
Be thine own palace, or the world's thy jail.
Without hard work, nothing grows but weeds.
The frontiers of knowledge in the various fields of our subject are expanding at such a rate that, work as hard as one can, one finds oneself further and further away from an understanding of the whole.