Know or listen to those who know.
To know oneself, one should assert oneself.
The dog that trots about finds a bone.
Be thine own palace, or the world's thy jail.
Things do not happen. Things are made to happen.
Begin to be now what you will be hereafter.
If you think you can do it, you can.
Wherever you are - be all there.
Be kind whenever possible. It is always possible.
You never know what motivates you.
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.