To achieve the impossible, it is precisely the unthinkable that must be thought.

Tom Robbins

If you're going through hell, keep going.

Sir Winston Churchill

The world is moving so fast these days that the man who says it can't be done is generally interrupted by someone doing it.

Elbert Hubbard

It is not because things are difficult that we do not dare; it is because we
do not dare that they are difficult.

Segoyewatha

The spirited horse, which will try to win the race of its own accord, will run even faster if encouraged.

Ovid