Most of the fundamental ideas of science are essentially simple, and may, as a rule, be expressed in a language comprehensible to everyone.

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.

One of the great joys of my life has been to travel around the world and meet thousands of Christians in every country.

[Africa] is the one continent where you still have a lot more young people than old people. So making sure they're healthy, good nutrition, good education. That'll be important for the world.

I think it is a good exercise to ask oneself, "How would I have wanted to be treated?"

The good news is that because terrorist groups rely so heavily on the internet, it offers new avenues for the U.S. and its allies to fight them.

There are four great measures for my administration - a reduction of tariff, an independent treasury, settlement of the Oregon boundary and acquisition of California.

Poetry is something in-between the dream and its interpretation.

Acting for me sometimes is taking whatever personal experiences I have and try to apply that [to a role].

With much we surfeit; plenty makes us poor.

[The public lands represent] in a sense, the breathing space of the nation.

I think moms need to share information on a regular, intimate basis.