Know or listen to those who know.
Either you run the day or the day runs you.
The wise does at once what the fool does at last.
Wherever you are - be all there.
By failing to prepare, you are preparing to fail.
Be gentle to all and stern with yourself.
Never complain and never explain.
I can, therefore I am.
The dog that trots about finds a bone.
If you can dream it, you can do it.
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.