Satisfaction of one's curiosity is one of the greatest sources of happiness in life.

The happiness of most people is not ruined by great catastrophes or fatal errors but by the repetition of slowly destructive little things.

The greatest of follies is to sacrifice health for any other kind of happiness.

The person born with a talent they are meant to use will find their greatest happiness in using it.

Just do what must be done. This may not be happiness but it is greatness.

I am determined to be cheerful and happy in whatever situation I may find myself. For I have learned that the greater part of our misery or unhappiness is determined not by our circumstance but by our disposition.

A just and reasonable modesty does not only recommend eloquence but sets off every great talent which a man can be possessed of.

Science is the great antidote to the poison of enthusiasm and superstition.

Nobody I think ought to read poetry or look at pictures or statues who cannot find a great deal more in them than the poet or artist has actually expressed. Their highest merit is suggestiveness.

I remember a great America where we made everything. There was a time when the only thing you got from Japan was a really bad cheap transistor radio that some aunt gave you for Christmas.