I can, therefore I am.
To know oneself, one should assert oneself.
What you do today can improve all your tomorrows.
If you're going through hell, keep going.
If you've got a talent, protect it.
Problems are not stop signs, they are guidelines.
Wherever you are - be all there.
The dog that trots about finds a bone.
After a storm comes a calm.
Who seeks shall find.
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.