If you think you can do it, you can.
Do not weep do not wax indignant. Understand.
To know oneself, one should assert oneself.
If you can dream it, you can do it.
It's always too early to quit.
Without hard work, nothing grows but weeds.
Problems are not stop signs, they are guidelines.
Never complain and never explain.
Begin to be now what you will be hereafter.
Quality is not an act, it is a habit.
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.