The most important tool of the theoretical physicist is his wastebasket.

Gravitation is not responsible for people falling in love.

Life is like riding a bicycle. To keep your balance, you must keep moving.

Life isn't worth living, unless it is lived for someone else.

Imagination is everything. It is the preview of life's coming attractions.

Wisdom is not a product of schooling but of the lifelong attempt to acquire it.

Strive not to be a success, but rather to be of value.

The true sign of intelligence is not knowledge but imagination.

God is clever but not dishonest.

Try not to become a man of success but rather a man of value.

Weakness of attitude becomes weakness of character.

I'm raised from gutter to protect another gutter

Let her be with her memories. Better that than be aware of this reality.

I've been a little cranky since that house fell on my sister.

If you are not happy with the work you do, change it

One big vice in a man is apt to keep out a great many smaller ones.

I've never had the patience of a teacher.

Every single one of us can do things that no one else can do can love things that no one else can love. We are like violins. We can be used for doorstops, or we can make music.

To focus means to bring your attention to the center, to concentrate on one thing intently in order to gain clarity.

When the reader and one narrator know something the other narrator does not, the opportunities for suspense and plot development and the shifting of reader sympathies get really interesting.

Every flower of the field, every fiber of a plant, every particle of an insect carries with it the impress of its Maker and can-if duly considered-read us lectures of ethics or divinity.