I accept no principles of physics which are not also accepted in mathematics.

We do not describe the world we see, we see the world we can describe.

Whenever anyone has offended me, I try to raise my soul so high that the offense cannot reach it.

De omnibus dubitandum

Divide each difficulty into as many parts as is feasible and necessary to resolve it.

Conquer yourself rather than the world.

The reading of all good books is like a conversation with the finest minds of past centuries.

The chief cause of human errors is to be found in the prejudices picked up in childhood.

Doubt is the origin of wisdom

The only thing we have power over in the universe is our own thoughts.

How can you be certain that your whole life is not a dream?

Education gives you lights to see, wings to fly, and music to sing.

A life without goals is a bird without wings

You have to humor them you know." Lucile sighed lightly as the door closed. "Men can be boring, but they are necessary. One needs to learn to work around them. Don't you think so?

I'm sure there are people who consider themselves Democrats, maybe even liberals, who are good Christians, but if so I do not think they understand the tenants of those two organizations.

There's always going to be a need for activism; there's always going to be a need for you and me doing the right thing, being very Lincoln-sonian in looking out for each other.

The dowry, not the wife, is the object of attraction.

Germany is using its Energiewende policy as a way of envisioning a green transformation and innovation across many sectors.

We don't live abundant and happy lives in isolation or by being takers. So by giving away your purpose to others, you will find that others want to GIVE to you, too.

The polar bear for many has become a living symbol of the dangers of global warming. The powerful kings of the arctic are finding their habitat shrinking.

Setting my mind on a musical instrument was like falling in love. All the world seemed bright and changed.