The only real mistake is the one from which we learn nothing.
Our lives are defined by opportunities, even the ones we miss.
Life can only be understood backwards; but it must be lived forwards.
We are all in the gutter, but some of us are looking at the stars.
The only limit to our realization of tomorrow will be our doubts of today.
We do not learn from experience... we learn from reflecting on experience.
We don't see things as they are, we see them as we are.