Either you run the day or the day runs you.
Do not weep do not wax indignant. Understand.
The wise does at once what the fool does at last.
Things do not happen. Things are made to happen.
It's always too early to quit.
Be kind whenever possible. It is always possible.
Always desire to learn something useful.
If you think you can do it, you can.
Expect problems and eat them for breakfast.
Go for it now. The future is promised to no one.
Imagination is as vital to any advance in science as learning and precision are essential for starting points.