Either you run the day or the day runs you.
If you can dream it, you can do it.
Know or listen to those who know.
Leap, and the net will appear.
If you've got a talent, protect it.
Begin to be now what you will be hereafter.
Be gentle to all and stern with yourself.
The secret of getting ahead is getting started.
Always desire to learn something useful.
To know oneself, one should assert oneself.
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.