A pessimist is a person who has had to listen to too many optimists.

A pessimist is a person who has had to listen to too many optimists.

A man may be a pessimistic determinist before lunch and an optimistic believer in the will's freedom after it.

A man may be a pessimistic determinist before lunch and an optimistic believer in the will's freedom after it.

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.

May the pain you have known and the conflict you have experienced give you the strength to walk through life read more

May the pain you have known and the conflict you have experienced give you the strength to walk through life facing each new situation with courage and optimism.

I'm not afraid of storms, for I'm learning how to sail my ship.

I'm not afraid of storms, for I'm learning how to sail my ship.

Few cases of eyestrain have been developed by looking on the bright side of things.

Few cases of eyestrain have been developed by looking on the bright side of things.

You can do anything you think you can. This knowledge is literally the gift of the gods, for through it read more

You can do anything you think you can. This knowledge is literally the gift of the gods, for through it you can solve every human problem. It should make of you an incurable optimist. It is the open door.

An optimist will tell you the glass is half-full; the pessimist, half-empty; and the engineer will tell you the glass read more

An optimist will tell you the glass is half-full; the pessimist, half-empty; and the engineer will tell you the glass is twice the size it needs to be

... she knew in her heart that to be without optimism, that core of reasonless hope in the spirit rather read more

... she knew in her heart that to be without optimism, that core of reasonless hope in the spirit rather than the brain, was a fatal flaw, the seed of death.