The dog that trots about finds a bone.
Wherever you are - be all there.
Leap, and the net will appear.
The wise does at once what the fool does at last.
I can, therefore I am.
If you think you can do it, you can.
To be a good loser is to learn how to win.
Do not weep do not wax indignant. Understand.
To know oneself, one should assert oneself.
Things do not happen. Things are made to happen.
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.