It's always too early to quit.
I can, therefore I am.
The secret of getting ahead is getting started.
Never complain and never explain.
After a storm comes a calm.
Well done is better than well said.
Problems are not stop signs, they are guidelines.
Expect problems and eat them for breakfast.
Begin to be now what you will be hereafter.
If you can dream it, you can do it.
The scientist is motivated primarily by curiosity and a desire for truth.
Science, almost from its beginnings, has been truly international in character. National prejudices disappear completely in the scientist's search for truth.