You never know what motivates you.
Do not weep do not wax indignant. Understand.
The dog that trots about finds a bone.
It's always too early to quit.
The most effective way to do it, is to do it.
Know or listen to those who know.
Leap, and the net will appear.
Never complain and never explain.
Wherever you are - be all there.
To know oneself, one should assert oneself.
The best way to have a good idea is to have a lot of ideas.
Satisfaction of one's curiosity is one of the greatest sources of happiness in life.
Facts are the air of scientists. Without them you can never fly.