He who is not very strong in memory should not meddle with lying.
My friends are my estate.
Not everything that can be counted counts, and not everything that counts can be counted.
The meeting of two personalities is like the contact of two chemical substances: if there is any reaction, both are transformed.
Things are only impossible until they're not.
It's wonderful what we can do if we're always doing.
You've achieved success in your field when you don't know whether what you're doing is work or play.