No doctor is a good doctor who has never been ill himself.

Anyone whoconducts an argument by appealing to authority is not using his intelligence,just his memory.

Mandoes not live by words alone, despite the fact that sometimes he has to eatthem.

All mankind is divided into three classes: those who are immovable; those who are movable; and those who move.

All faults may be forgiven of him who has perfect candour

Pessimism, when you get used to it, is just as agreeable as optimism.

To have a respect for ourselves guides our morals; to have a deference for others governs our manners.

The loftierthe building the deeper the foundation must be.

Eyes are more accurate witness than ears

Never ask a barber if you need a haircut.

The leaders who work most effectively, it seems to me,never say ‘I.’ And that's not because they have trainedthemselves not to say ‘I.’ They don't think ‘I.’ Theythink ‘we’; they think ‘team.’ They understand theirjob to be to make the team function. They

Outside noisy, inside empty.