Don't give us your doubts, gives us your certainties, for we have doubts enough of our own.

There is strong shadow where there is much light.

Men are much more apt to agree in what they do than in what they think.

The important thing is not to know more than all men, but to know more at each moment than any particular man.

So dear night the half of life is, And the fairest half indeed.

To quit smoking, you must first want to quit, but then you must also do the quitting

The world only goes forward because of those who oppose it.