I can, therefore I am.
Be gentle to all and stern with yourself.
Either you run the day or the day runs you.
The wise does at once what the fool does at last.
What you do today can improve all your tomorrows.
Go for it now. The future is promised to no one.
Well done is better than well said.
If you've got a talent, protect it.
Only the educated are free.
Problems are not stop signs, they are guidelines.
It frequently happens that two persons, reasoning right on a mechanical subject, think alike and invent the same thing without any communication with each other.