Nothing is more conducive to peace of mind than not having any opinion at all.

One's first step in wisdom is to question everything - and one's last is to come to terms with everything.

Some people come by the name of genius in the same way that certain insects come by the name of centipede -- not because they have a hundred feet, but because most people can't count above 14.

The fruits of philosophy are the important thing, not the philosophy itself. When we ask the time, we don't want to know how watches are made.

I cannot say whether things will get better if we change; what I can say is they must change if they are to get better.

Ask yourself always: how can this be done better?

It is in the gift for employing all the vicissitudes of life to one's own advantage and to that of one's craft that a large part of genius consists.