Если хочешь, чтобы дело было сделано хорошо, сделай его сам - If you want a thing well done, do it yourself
Ask not what your country can do for you; ask what you can do for your country.
Do what you can, with what you have, where you are.
— Do you think poets can learn from one another?
— Only if they're bad poets.
If you find yourself in a hole, the first thing to do is stop digging.
You can never defeat another if you do not know how to defeat yourself.
If you can dream it, you can do it.
When you can live forever, What do you live for?