The secret of creativity is knowing how to hide your sources.

The days are long, but the years are short.

The secret of joy in work is contained in one word - excellence. To know how to do something well is to enjoy it.

Total absence of humor renders life impossible.

What we have to do is to be forever curiously testing new opinions and courting new impressions.

Furious activity is no substitute for understanding.

Today might be a great and wonderful day. It depends on you.

The only good is knowledge and the only evil is ignorance.

Forgive your enemies, but never forget their names.

No act of kindness, no matter how small, is ever wasted.

The impossible cannot have happened, therefore the impossible must be possible in spite of appearances.

Success usually comes to those who are too busy to be looking for it.

Try and fail, but don't fail to try.

Learning is a treasure that will follow its owner everywhere.

To accomplish great things, we must dream as well as act.

Do not fear going forward slowly, fear only to stand still.

A good listener is not only popular everywhere, but after a while he knows something.

In hatred as in love, we grow like the thing we brood upon. What we loathe, we graft into our very soul.

The young have aspirations that never come to pass, the old have reminiscences of what never happened.