If you're going through hell, keep going.
After a storm comes a calm.
By failing to prepare, you are preparing to fail.
The wise does at once what the fool does at last.
It's always too early to quit.
Be kind whenever possible. It is always possible.
Know or listen to those who know.
Expect problems and eat them for breakfast.
The secret of getting ahead is getting started.
Be gentle to all and stern with yourself.
Imagination is as vital to any advance in science as learning and precision are essential for starting points.