I can, therefore I am.
Be gentle to all and stern with yourself.
Well done is better than well said.
Go for it now. The future is promised to no one.
The most effective way to do it, is to do it.
By failing to prepare, you are preparing to fail.
Either you run the day or the day runs you.
Only the educated are free.
Never complain and never explain.
To know oneself, one should assert oneself.
And, in fact, you can find that the lack of basic resources, material resources, contributes to unhappiness, but the increase in material resources do not increase happiness.