The man who is a pessimist before forty-eight knows too much; if he is an optimist after it he knows read more

The man who is a pessimist before forty-eight knows too much; if he is an optimist after it he knows too little

Be an optimist -- at least until they start moving animals in pairs to Cape Canaveral.

Be an optimist -- at least until they start moving animals in pairs to Cape Canaveral.

A pessimist is one who makes difficulties of his opportunities; an optimist is one who makes opportunities of his difficulties.

A pessimist is one who makes difficulties of his opportunities; an optimist is one who makes opportunities of his difficulties.

Teaching is the greatest act of optimism

Teaching is the greatest act of optimism

There is no sadder sight than a young pessimist, except an old optimist.

There is no sadder sight than a young pessimist, except an old optimist.

Optimism. The doctrine or belief that everything is beautiful, including what is ugly.

Optimism. The doctrine or belief that everything is beautiful, including what is ugly.

If you pretend to be good, the world takes you very seriously. If you pretend to be bad, it doesn't. read more

If you pretend to be good, the world takes you very seriously. If you pretend to be bad, it doesn't. Such is the astounding stupidity of optimism.

I'm a pessimist because of intelligence, but an optimist because of will

I'm a pessimist because of intelligence, but an optimist because of will

I always like to look on the optimistic side of life, but I am realistic enough to know that life read more

I always like to look on the optimistic side of life, but I am realistic enough to know that life is a complex matter.