Nobody grows old merely by living a number of years. We grow old by deserting our ideals. Years may wrinkle the skin, but to give up enthusiasm wrinkles the soul.

Youth is not a time of life; it is a state of mind; it is not a matter of rosy cheeks, red lips and supple knees; it is a matter of the will, quality of the imagination, a vigor of the emotions; it is the freshness of the deep springs of life.

You are as young as your self-confidence, as old as your fears; as young as your hope, as old as your despair.

Maturity is the ability to think, speak and act your feelings within the bounds of dignity. The measure of your maturity is how spiritual you become during the midst of your frustrations.

I think it's healthy that people that work in a creative field look for inspiration in a different creative field.

I don't really have a main source for my style inspiration. It's really about however I feel about myself at the moment.

In Roslyn, Pennsylvania, we started our real-life family circus. They provided the inspiration for my cartoons. I provided the perspiration.

Although we might think of Holmes as the Ur-sleuth, the seminal inspiration for many writers comes not from the chronicles of Baker Street but from the intricately plotted novels of Charles Dickens and his colleague Wilkie Collins, who in works like 'Bleak House' and 'The Moonstone' established the modern, character-driven mystery novel.