Problems are not stop signs, they are guidelines.
The secret of getting ahead is getting started.
Begin to be now what you will be hereafter.
I can, therefore I am.
To be a good loser is to learn how to win.
It's always too early to quit.
Quality is not an act, it is a habit.
To know oneself, one should assert oneself.
Without hard work, nothing grows but weeds.
Leap, and the net will appear.
In 1948 I entered the Massachusetts Institute of Technology, undecided between studies of chemistry and physics, but my first year convinced me that physics was more interesting to me.